fix: prevent asset conflicts between React and Grid.js versions

Add coexistence checks to all enqueue methods to prevent loading
both React and Grid.js assets simultaneously.

Changes:
- ReactAdmin.php: Only enqueue React assets when ?react=1
- Init.php: Skip Grid.js when React active on admin pages
- Form.php, Coupon.php, Access.php: Restore classic assets when ?react=0
- Customer.php, Product.php, License.php: Add coexistence checks

Now the toggle between Classic and React versions works correctly.

Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>

node_modules/@wordpress/components/build-module/item-group/item/component.js

@@ -0,0 +1,51 @@
+import { createElement } from "react";
+/**
+ * External dependencies
+ */
+
+/**
+ * Internal dependencies
+ */
+
+import { useItem } from './hook';
+import { contextConnect } from '../../context';
+import { View } from '../../view';
+function UnconnectedItem(props, forwardedRef) {
+  const {
+    role,
+    wrapperClassName,
+    ...otherProps
+  } = useItem(props);
+  return createElement("div", {
+    role: role,
+    className: wrapperClassName
+  }, createElement(View, {
+    ...otherProps,
+    ref: forwardedRef
+  }));
+}
+
+/**
+ * `Item` is used in combination with `ItemGroup` to display a list of items
+ * grouped and styled together.
+ *
+ * ```jsx
+ * import {
+ *   __experimentalItemGroup as ItemGroup,
+ *   __experimentalItem as Item,
+ * } from '@wordpress/components';
+ *
+ * function Example() {
+ *   return (
+ *     <ItemGroup>
+ *       <Item>Code</Item>
+ *       <Item>is</Item>
+ *       <Item>Poetry</Item>
+ *     </ItemGroup>
+ *   );
+ * }
+ * ```
+ */
+export const Item = contextConnect(UnconnectedItem, 'Item');
+export default Item;
+//# sourceMappingURL=component.js.map

node_modules/@wordpress/components/build-module/item-group/item/component.js.map

@@ -0,0 +1 @@
+{"version":3,"names":["useItem","contextConnect","View","UnconnectedItem","props","forwardedRef","role","wrapperClassName","otherProps","createElement","className","ref","Item"],"sources":["@wordpress/components/src/item-group/item/component.tsx"],"sourcesContent":["/**\n * External dependencies\n */\nimport type { ForwardedRef } from 'react';\n\n/**\n * Internal dependencies\n */\nimport type { ItemProps } from '../types';\nimport { useItem } from './hook';\nimport type { WordPressComponentProps } from '../../context';\nimport { contextConnect } from '../../context';\nimport { View } from '../../view';\n\nfunction UnconnectedItem(\n\tprops: WordPressComponentProps< ItemProps, 'div' >,\n\tforwardedRef: ForwardedRef< any >\n) {\n\tconst { role, wrapperClassName, ...otherProps } = useItem( props );\n\n\treturn (\n\t\t<div role={ role } className={ wrapperClassName }>\n\t\t\t<View { ...otherProps } ref={ forwardedRef } />\n\t\t</div>\n\t);\n}\n\n/**\n * `Item` is used in combination with `ItemGroup` to display a list of items\n * grouped and styled together.\n *\n * ```jsx\n * import {\n *   __experimentalItemGroup as ItemGroup,\n *   __experimentalItem as Item,\n * } from '@wordpress/components';\n *\n * function Example() {\n *   return (\n *     <ItemGroup>\n *       <Item>Code</Item>\n *       <Item>is</Item>\n *       <Item>Poetry</Item>\n *     </ItemGroup>\n *   );\n * }\n * ```\n */\nexport const Item = contextConnect( UnconnectedItem, 'Item' );\n\nexport default Item;\n"],"mappings":";AAAA;AACA;AACA;;AAGA;AACA;AACA;;AAEA,SAASA,OAAO,QAAQ,QAAQ;AAEhC,SAASC,cAAc,QAAQ,eAAe;AAC9C,SAASC,IAAI,QAAQ,YAAY;AAEjC,SAASC,eAAeA,CACvBC,KAAkD,EAClDC,YAAiC,EAChC;EACD,MAAM;IAAEC,IAAI;IAAEC,gBAAgB;IAAE,GAAGC;EAAW,CAAC,GAAGR,OAAO,CAAEI,KAAM,CAAC;EAElE,OACCK,aAAA;IAAKH,IAAI,EAAGA,IAAM;IAACI,SAAS,EAAGH;EAAkB,GAChDE,aAAA,CAACP,IAAI;IAAA,GAAMM,UAAU;IAAGG,GAAG,EAAGN;EAAc,CAAE,CAC1C,CAAC;AAER;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,OAAO,MAAMO,IAAI,GAAGX,cAAc,CAAEE,eAAe,EAAE,MAAO,CAAC;AAE7D,eAAeS,IAAI"}

node_modules/@wordpress/components/build-module/item-group/item/hook.js

@@ -0,0 +1,45 @@
+/**
+ * External dependencies
+ */
+
+/**
+ * WordPress dependencies
+ */
+import { useMemo } from '@wordpress/element';
+
+/**
+ * Internal dependencies
+ */
+
+import { useContextSystem } from '../../context';
+import * as styles from '../styles';
+import { useItemGroupContext } from '../context';
+import { useCx } from '../../utils/hooks/use-cx';
+export function useItem(props) {
+  const {
+    as: asProp,
+    className,
+    onClick,
+    role = 'listitem',
+    size: sizeProp,
+    ...otherProps
+  } = useContextSystem(props, 'Item');
+  const {
+    spacedAround,
+    size: contextSize
+  } = useItemGroupContext();
+  const size = sizeProp || contextSize;
+  const as = asProp || (typeof onClick !== 'undefined' ? 'button' : 'div');
+  const cx = useCx();
+  const classes = useMemo(() => cx((as === 'button' || as === 'a') && styles.unstyledButton(as), styles.itemSizes[size] || styles.itemSizes.medium, styles.item, spacedAround && styles.spacedAround, className), [as, className, cx, size, spacedAround]);
+  const wrapperClassName = cx(styles.itemWrapper);
+  return {
+    as,
+    className: classes,
+    onClick,
+    wrapperClassName,
+    role,
+    ...otherProps
+  };
+}
+//# sourceMappingURL=hook.js.map

node_modules/@wordpress/components/build-module/item-group/item/hook.js.map

@@ -0,0 +1 @@
+{"version":3,"names":["useMemo","useContextSystem","styles","useItemGroupContext","useCx","useItem","props","as","asProp","className","onClick","role","size","sizeProp","otherProps","spacedAround","contextSize","cx","classes","unstyledButton","itemSizes","medium","item","wrapperClassName","itemWrapper"],"sources":["@wordpress/components/src/item-group/item/hook.ts"],"sourcesContent":["/**\n * External dependencies\n */\nimport type { ElementType } from 'react';\n\n/**\n * WordPress dependencies\n */\nimport { useMemo } from '@wordpress/element';\n\n/**\n * Internal dependencies\n */\nimport type { WordPressComponentProps } from '../../context';\nimport { useContextSystem } from '../../context';\nimport * as styles from '../styles';\nimport { useItemGroupContext } from '../context';\nimport { useCx } from '../../utils/hooks/use-cx';\nimport type { ItemProps } from '../types';\n\nexport function useItem( props: WordPressComponentProps< ItemProps, 'div' > ) {\n\tconst {\n\t\tas: asProp,\n\t\tclassName,\n\t\tonClick,\n\t\trole = 'listitem',\n\t\tsize: sizeProp,\n\t\t...otherProps\n\t} = useContextSystem( props, 'Item' );\n\n\tconst { spacedAround, size: contextSize } = useItemGroupContext();\n\n\tconst size = sizeProp || contextSize;\n\n\tconst as =\n\t\tasProp ||\n\t\t( ( typeof onClick !== 'undefined'\n\t\t\t? 'button'\n\t\t\t: 'div' ) as ElementType );\n\n\tconst cx = useCx();\n\n\tconst classes = useMemo(\n\t\t() =>\n\t\t\tcx(\n\t\t\t\t( as === 'button' || as === 'a' ) &&\n\t\t\t\t\tstyles.unstyledButton( as ),\n\t\t\t\tstyles.itemSizes[ size ] || styles.itemSizes.medium,\n\t\t\t\tstyles.item,\n\t\t\t\tspacedAround && styles.spacedAround,\n\t\t\t\tclassName\n\t\t\t),\n\t\t[ as, className, cx, size, spacedAround ]\n\t);\n\n\tconst wrapperClassName = cx( styles.itemWrapper );\n\n\treturn {\n\t\tas,\n\t\tclassName: classes,\n\t\tonClick,\n\t\twrapperClassName,\n\t\trole,\n\t\t...otherProps,\n\t};\n}\n"],"mappings":"AAAA;AACA;AACA;;AAGA;AACA;AACA;AACA,SAASA,OAAO,QAAQ,oBAAoB;;AAE5C;AACA;AACA;;AAEA,SAASC,gBAAgB,QAAQ,eAAe;AAChD,OAAO,KAAKC,MAAM,MAAM,WAAW;AACnC,SAASC,mBAAmB,QAAQ,YAAY;AAChD,SAASC,KAAK,QAAQ,0BAA0B;AAGhD,OAAO,SAASC,OAAOA,CAAEC,KAAkD,EAAG;EAC7E,MAAM;IACLC,EAAE,EAAEC,MAAM;IACVC,SAAS;IACTC,OAAO;IACPC,IAAI,GAAG,UAAU;IACjBC,IAAI,EAAEC,QAAQ;IACd,GAAGC;EACJ,CAAC,GAAGb,gBAAgB,CAAEK,KAAK,EAAE,MAAO,CAAC;EAErC,MAAM;IAAES,YAAY;IAAEH,IAAI,EAAEI;EAAY,CAAC,GAAGb,mBAAmB,CAAC,CAAC;EAEjE,MAAMS,IAAI,GAAGC,QAAQ,IAAIG,WAAW;EAEpC,MAAMT,EAAE,GACPC,MAAM,KACF,OAAOE,OAAO,KAAK,WAAW,GAC/B,QAAQ,GACR,KAAK,CAAmB;EAE5B,MAAMO,EAAE,GAAGb,KAAK,CAAC,CAAC;EAElB,MAAMc,OAAO,GAAGlB,OAAO,CACtB,MACCiB,EAAE,CACD,CAAEV,EAAE,KAAK,QAAQ,IAAIA,EAAE,KAAK,GAAG,KAC9BL,MAAM,CAACiB,cAAc,CAAEZ,EAAG,CAAC,EAC5BL,MAAM,CAACkB,SAAS,CAAER,IAAI,CAAE,IAAIV,MAAM,CAACkB,SAAS,CAACC,MAAM,EACnDnB,MAAM,CAACoB,IAAI,EACXP,YAAY,IAAIb,MAAM,CAACa,YAAY,EACnCN,SACD,CAAC,EACF,CAAEF,EAAE,EAAEE,SAAS,EAAEQ,EAAE,EAAEL,IAAI,EAAEG,YAAY,CACxC,CAAC;EAED,MAAMQ,gBAAgB,GAAGN,EAAE,CAAEf,MAAM,CAACsB,WAAY,CAAC;EAEjD,OAAO;IACNjB,EAAE;IACFE,SAAS,EAAES,OAAO;IAClBR,OAAO;IACPa,gBAAgB;IAChBZ,IAAI;IACJ,GAAGG;EACJ,CAAC;AACF"}

node_modules/@wordpress/components/build-module/item-group/item/index.js

@@ -0,0 +1,3 @@
+export { default } from './component';
+export { useItem } from './hook';
+//# sourceMappingURL=index.js.map

node_modules/@wordpress/components/build-module/item-group/item/index.js.map

@@ -0,0 +1 @@
+{"version":3,"names":["default","useItem"],"sources":["@wordpress/components/src/item-group/item/index.ts"],"sourcesContent":["export { default } from './component';\nexport { useItem } from './hook';\n"],"mappings":"AAAA,SAASA,OAAO,QAAQ,aAAa;AACrC,SAASC,OAAO,QAAQ,QAAQ"}