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/card/card-header/component.js

@@ -0,0 +1,35 @@
+import { createElement } from "react";
+/**
+ * External dependencies
+ */
+
+/**
+ * Internal dependencies
+ */
+
+import { contextConnect } from '../../context';
+import { Flex } from '../../flex';
+import { useCardHeader } from './hook';
+function UnconnectedCardHeader(props, forwardedRef) {
+  const headerProps = useCardHeader(props);
+  return createElement(Flex, {
+    ...headerProps,
+    ref: forwardedRef
+  });
+}
+
+/**
+ * `CardHeader` renders an optional header within a `Card`.
+ *
+ * ```jsx
+ * import { Card, CardBody, CardHeader } from `@wordpress/components`;
+ *
+ * <Card>
+ * 	<CardHeader>...</CardHeader>
+ * 	<CardBody>...</CardBody>
+ * </Card>
+ * ```
+ */
+export const CardHeader = contextConnect(UnconnectedCardHeader, 'CardHeader');
+export default CardHeader;
+//# sourceMappingURL=component.js.map

node_modules/@wordpress/components/build-module/card/card-header/component.js.map

@@ -0,0 +1 @@
+{"version":3,"names":["contextConnect","Flex","useCardHeader","UnconnectedCardHeader","props","forwardedRef","headerProps","createElement","ref","CardHeader"],"sources":["@wordpress/components/src/card/card-header/component.tsx"],"sourcesContent":["/**\n * External dependencies\n */\nimport type { ForwardedRef } from 'react';\n\n/**\n * Internal dependencies\n */\nimport type { WordPressComponentProps } from '../../context';\nimport { contextConnect } from '../../context';\nimport { Flex } from '../../flex';\nimport { useCardHeader } from './hook';\nimport type { HeaderProps } from '../types';\n\nfunction UnconnectedCardHeader(\n\tprops: WordPressComponentProps< HeaderProps, 'div' >,\n\tforwardedRef: ForwardedRef< any >\n) {\n\tconst headerProps = useCardHeader( props );\n\n\treturn <Flex { ...headerProps } ref={ forwardedRef } />;\n}\n\n/**\n * `CardHeader` renders an optional header within a `Card`.\n *\n * ```jsx\n * import { Card, CardBody, CardHeader } from `@wordpress/components`;\n *\n * <Card>\n * \t<CardHeader>...</CardHeader>\n * \t<CardBody>...</CardBody>\n * </Card>\n * ```\n */\nexport const CardHeader = contextConnect( UnconnectedCardHeader, 'CardHeader' );\n\nexport default CardHeader;\n"],"mappings":";AAAA;AACA;AACA;;AAGA;AACA;AACA;;AAEA,SAASA,cAAc,QAAQ,eAAe;AAC9C,SAASC,IAAI,QAAQ,YAAY;AACjC,SAASC,aAAa,QAAQ,QAAQ;AAGtC,SAASC,qBAAqBA,CAC7BC,KAAoD,EACpDC,YAAiC,EAChC;EACD,MAAMC,WAAW,GAAGJ,aAAa,CAAEE,KAAM,CAAC;EAE1C,OAAOG,aAAA,CAACN,IAAI;IAAA,GAAMK,WAAW;IAAGE,GAAG,EAAGH;EAAc,CAAE,CAAC;AACxD;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,OAAO,MAAMI,UAAU,GAAGT,cAAc,CAAEG,qBAAqB,EAAE,YAAa,CAAC;AAE/E,eAAeM,UAAU"}

node_modules/@wordpress/components/build-module/card/card-header/hook.js

@@ -0,0 +1,30 @@
+/**
+ * WordPress dependencies
+ */
+import { useMemo } from '@wordpress/element';
+
+/**
+ * Internal dependencies
+ */
+
+import { useContextSystem } from '../../context';
+import * as styles from '../styles';
+import { useCx } from '../../utils/hooks/use-cx';
+export function useCardHeader(props) {
+  const {
+    className,
+    isBorderless = false,
+    isShady = false,
+    size = 'medium',
+    ...otherProps
+  } = useContextSystem(props, 'CardHeader');
+  const cx = useCx();
+  const classes = useMemo(() => cx(styles.Header, styles.borderRadius, styles.borderColor, styles.cardPaddings[size], isBorderless && styles.borderless, isShady && styles.shady,
+  // This classname is added for legacy compatibility reasons.
+  'components-card__header', className), [className, cx, isBorderless, isShady, size]);
+  return {
+    ...otherProps,
+    className: classes
+  };
+}
+//# sourceMappingURL=hook.js.map

node_modules/@wordpress/components/build-module/card/card-header/hook.js.map

@@ -0,0 +1 @@
+{"version":3,"names":["useMemo","useContextSystem","styles","useCx","useCardHeader","props","className","isBorderless","isShady","size","otherProps","cx","classes","Header","borderRadius","borderColor","cardPaddings","borderless","shady"],"sources":["@wordpress/components/src/card/card-header/hook.ts"],"sourcesContent":["/**\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 { useCx } from '../../utils/hooks/use-cx';\nimport type { HeaderProps } from '../types';\n\nexport function useCardHeader(\n\tprops: WordPressComponentProps< HeaderProps, 'div' >\n) {\n\tconst {\n\t\tclassName,\n\t\tisBorderless = false,\n\t\tisShady = false,\n\t\tsize = 'medium',\n\t\t...otherProps\n\t} = useContextSystem( props, 'CardHeader' );\n\n\tconst cx = useCx();\n\n\tconst classes = useMemo(\n\t\t() =>\n\t\t\tcx(\n\t\t\t\tstyles.Header,\n\t\t\t\tstyles.borderRadius,\n\t\t\t\tstyles.borderColor,\n\t\t\t\tstyles.cardPaddings[ size ],\n\t\t\t\tisBorderless && styles.borderless,\n\t\t\t\tisShady && styles.shady,\n\t\t\t\t// This classname is added for legacy compatibility reasons.\n\t\t\t\t'components-card__header',\n\t\t\t\tclassName\n\t\t\t),\n\t\t[ className, cx, isBorderless, isShady, size ]\n\t);\n\n\treturn {\n\t\t...otherProps,\n\t\tclassName: classes,\n\t};\n}\n"],"mappings":"AAAA;AACA;AACA;AACA,SAASA,OAAO,QAAQ,oBAAoB;;AAE5C;AACA;AACA;;AAEA,SAASC,gBAAgB,QAAQ,eAAe;AAChD,OAAO,KAAKC,MAAM,MAAM,WAAW;AACnC,SAASC,KAAK,QAAQ,0BAA0B;AAGhD,OAAO,SAASC,aAAaA,CAC5BC,KAAoD,EACnD;EACD,MAAM;IACLC,SAAS;IACTC,YAAY,GAAG,KAAK;IACpBC,OAAO,GAAG,KAAK;IACfC,IAAI,GAAG,QAAQ;IACf,GAAGC;EACJ,CAAC,GAAGT,gBAAgB,CAAEI,KAAK,EAAE,YAAa,CAAC;EAE3C,MAAMM,EAAE,GAAGR,KAAK,CAAC,CAAC;EAElB,MAAMS,OAAO,GAAGZ,OAAO,CACtB,MACCW,EAAE,CACDT,MAAM,CAACW,MAAM,EACbX,MAAM,CAACY,YAAY,EACnBZ,MAAM,CAACa,WAAW,EAClBb,MAAM,CAACc,YAAY,CAAEP,IAAI,CAAE,EAC3BF,YAAY,IAAIL,MAAM,CAACe,UAAU,EACjCT,OAAO,IAAIN,MAAM,CAACgB,KAAK;EACvB;EACA,yBAAyB,EACzBZ,SACD,CAAC,EACF,CAAEA,SAAS,EAAEK,EAAE,EAAEJ,YAAY,EAAEC,OAAO,EAAEC,IAAI,CAC7C,CAAC;EAED,OAAO;IACN,GAAGC,UAAU;IACbJ,SAAS,EAAEM;EACZ,CAAC;AACF"}

node_modules/@wordpress/components/build-module/card/card-header/index.js

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

node_modules/@wordpress/components/build-module/card/card-header/index.js.map

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