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/heading/component.js

@@ -0,0 +1,34 @@
+import { createElement } from "react";
+/**
+ * External dependencies
+ */
+
+/**
+ * Internal dependencies
+ */
+
+import { contextConnect } from '../context';
+import { View } from '../view';
+import { useHeading } from './hook';
+function UnconnectedHeading(props, forwardedRef) {
+  const headerProps = useHeading(props);
+  return createElement(View, {
+    ...headerProps,
+    ref: forwardedRef
+  });
+}
+
+/**
+ * `Heading` renders headings and titles using the library's typography system.
+ *
+ * ```jsx
+ * import { __experimentalHeading as Heading } from "@wordpress/components";
+ *
+ * function Example() {
+ *   return <Heading>Code is Poetry</Heading>;
+ * }
+ * ```
+ */
+export const Heading = contextConnect(UnconnectedHeading, 'Heading');
+export default Heading;
+//# sourceMappingURL=component.js.map

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

@@ -0,0 +1 @@
+{"version":3,"names":["contextConnect","View","useHeading","UnconnectedHeading","props","forwardedRef","headerProps","createElement","ref","Heading"],"sources":["@wordpress/components/src/heading/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 { View } from '../view';\nimport { useHeading } from './hook';\nimport type { HeadingProps } from './types';\n\nfunction UnconnectedHeading(\n\tprops: WordPressComponentProps< HeadingProps, 'h1' >,\n\tforwardedRef: ForwardedRef< any >\n) {\n\tconst headerProps = useHeading( props );\n\n\treturn <View { ...headerProps } ref={ forwardedRef } />;\n}\n\n/**\n * `Heading` renders headings and titles using the library's typography system.\n *\n * ```jsx\n * import { __experimentalHeading as Heading } from \"@wordpress/components\";\n *\n * function Example() {\n *   return <Heading>Code is Poetry</Heading>;\n * }\n * ```\n */\nexport const Heading = contextConnect( UnconnectedHeading, 'Heading' );\n\nexport default Heading;\n"],"mappings":";AAAA;AACA;AACA;;AAGA;AACA;AACA;;AAEA,SAASA,cAAc,QAAQ,YAAY;AAC3C,SAASC,IAAI,QAAQ,SAAS;AAC9B,SAASC,UAAU,QAAQ,QAAQ;AAGnC,SAASC,kBAAkBA,CAC1BC,KAAoD,EACpDC,YAAiC,EAChC;EACD,MAAMC,WAAW,GAAGJ,UAAU,CAAEE,KAAM,CAAC;EAEvC,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,OAAO,MAAMI,OAAO,GAAGT,cAAc,CAAEG,kBAAkB,EAAE,SAAU,CAAC;AAEtE,eAAeM,OAAO"}

node_modules/@wordpress/components/build-module/heading/hook.js

@@ -0,0 +1,38 @@
+/**
+ * Internal dependencies
+ */
+
+import { useContextSystem } from '../context';
+import { useText } from '../text';
+import { getHeadingFontSize } from '../utils/font-size';
+import { CONFIG, COLORS } from '../utils';
+export function useHeading(props) {
+  const {
+    as: asProp,
+    level = 2,
+    color = COLORS.gray[900],
+    isBlock = true,
+    weight = CONFIG.fontWeightHeading,
+    ...otherProps
+  } = useContextSystem(props, 'Heading');
+  const as = asProp || `h${level}`;
+  const a11yProps = {};
+  if (typeof as === 'string' && as[0] !== 'h') {
+    // If not a semantic `h` element, add a11y props:
+    a11yProps.role = 'heading';
+    a11yProps['aria-level'] = typeof level === 'string' ? parseInt(level) : level;
+  }
+  const textProps = useText({
+    color,
+    isBlock,
+    weight,
+    size: getHeadingFontSize(level),
+    ...otherProps
+  });
+  return {
+    ...textProps,
+    ...a11yProps,
+    as
+  };
+}
+//# sourceMappingURL=hook.js.map

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

@@ -0,0 +1 @@
+{"version":3,"names":["useContextSystem","useText","getHeadingFontSize","CONFIG","COLORS","useHeading","props","as","asProp","level","color","gray","isBlock","weight","fontWeightHeading","otherProps","a11yProps","role","parseInt","textProps","size"],"sources":["@wordpress/components/src/heading/hook.ts"],"sourcesContent":["/**\n * Internal dependencies\n */\nimport type { WordPressComponentProps } from '../context';\nimport { useContextSystem } from '../context';\nimport { useText } from '../text';\nimport { getHeadingFontSize } from '../utils/font-size';\nimport { CONFIG, COLORS } from '../utils';\nimport type { HeadingProps } from './types';\n\nexport function useHeading(\n\tprops: WordPressComponentProps< HeadingProps, 'h1' >\n) {\n\tconst {\n\t\tas: asProp,\n\t\tlevel = 2,\n\t\tcolor = COLORS.gray[ 900 ],\n\t\tisBlock = true,\n\t\tweight = CONFIG.fontWeightHeading as import('react').CSSProperties[ 'fontWeight' ],\n\t\t...otherProps\n\t} = useContextSystem( props, 'Heading' );\n\n\tconst as = ( asProp || `h${ level }` ) as keyof JSX.IntrinsicElements;\n\n\tconst a11yProps: {\n\t\trole?: string;\n\t\t'aria-level'?: number;\n\t} = {};\n\tif ( typeof as === 'string' && as[ 0 ] !== 'h' ) {\n\t\t// If not a semantic `h` element, add a11y props:\n\t\ta11yProps.role = 'heading';\n\t\ta11yProps[ 'aria-level' ] =\n\t\t\ttypeof level === 'string' ? parseInt( level ) : level;\n\t}\n\n\tconst textProps = useText( {\n\t\tcolor,\n\t\tisBlock,\n\t\tweight,\n\t\tsize: getHeadingFontSize( level ),\n\t\t...otherProps,\n\t} );\n\n\treturn { ...textProps, ...a11yProps, as };\n}\n"],"mappings":"AAAA;AACA;AACA;;AAEA,SAASA,gBAAgB,QAAQ,YAAY;AAC7C,SAASC,OAAO,QAAQ,SAAS;AACjC,SAASC,kBAAkB,QAAQ,oBAAoB;AACvD,SAASC,MAAM,EAAEC,MAAM,QAAQ,UAAU;AAGzC,OAAO,SAASC,UAAUA,CACzBC,KAAoD,EACnD;EACD,MAAM;IACLC,EAAE,EAAEC,MAAM;IACVC,KAAK,GAAG,CAAC;IACTC,KAAK,GAAGN,MAAM,CAACO,IAAI,CAAE,GAAG,CAAE;IAC1BC,OAAO,GAAG,IAAI;IACdC,MAAM,GAAGV,MAAM,CAACW,iBAAkE;IAClF,GAAGC;EACJ,CAAC,GAAGf,gBAAgB,CAAEM,KAAK,EAAE,SAAU,CAAC;EAExC,MAAMC,EAAE,GAAKC,MAAM,IAAK,IAAIC,KAAO,EAAkC;EAErE,MAAMO,SAGL,GAAG,CAAC,CAAC;EACN,IAAK,OAAOT,EAAE,KAAK,QAAQ,IAAIA,EAAE,CAAE,CAAC,CAAE,KAAK,GAAG,EAAG;IAChD;IACAS,SAAS,CAACC,IAAI,GAAG,SAAS;IAC1BD,SAAS,CAAE,YAAY,CAAE,GACxB,OAAOP,KAAK,KAAK,QAAQ,GAAGS,QAAQ,CAAET,KAAM,CAAC,GAAGA,KAAK;EACvD;EAEA,MAAMU,SAAS,GAAGlB,OAAO,CAAE;IAC1BS,KAAK;IACLE,OAAO;IACPC,MAAM;IACNO,IAAI,EAAElB,kBAAkB,CAAEO,KAAM,CAAC;IACjC,GAAGM;EACJ,CAAE,CAAC;EAEH,OAAO;IAAE,GAAGI,SAAS;IAAE,GAAGH,SAAS;IAAET;EAAG,CAAC;AAC1C"}

node_modules/@wordpress/components/build-module/heading/index.js

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

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

@@ -0,0 +1 @@
+{"version":3,"names":["default","Heading","useHeading"],"sources":["@wordpress/components/src/heading/index.ts"],"sourcesContent":["export { default as Heading } from './component';\nexport { useHeading } from './hook';\n"],"mappings":"AAAA,SAASA,OAAO,IAAIC,OAAO,QAAQ,aAAa;AAChD,SAASC,UAAU,QAAQ,QAAQ"}

node_modules/@wordpress/components/build-module/heading/types.js

@@ -0,0 +1,2 @@
+export {};
+//# sourceMappingURL=types.js.map

node_modules/@wordpress/components/build-module/heading/types.js.map

@@ -0,0 +1 @@
+{"version":3,"names":[],"sources":["@wordpress/components/src/heading/types.ts"],"sourcesContent":["/**\n * Internal dependencies\n */\nimport type { Props as TextProps } from '../text/types';\n\nexport type HeadingSize =\n\t| 1\n\t| 2\n\t| 3\n\t| 4\n\t| 5\n\t| 6\n\t| '1'\n\t| '2'\n\t| '3'\n\t| '4'\n\t| '5'\n\t| '6';\n\nexport type HeadingProps = Omit<\n\tTextProps,\n\t'size' | 'isBlock' | 'color' | 'weight'\n> & {\n\t/**\n\t * Passing any of the heading levels to `level` will both render the correct\n\t * typographic text size as well as the semantic element corresponding to\n\t * the level (`h1` for `1` for example).\n\t *\n\t * @default 2\n\t */\n\tlevel?: HeadingSize;\n\t/**\n\t * Sets `Heading` to have `display: block`. Note: text truncation only works\n\t * when `isBlock` is `false`.\n\t *\n\t * @default true\n\t */\n\tisBlock?: TextProps[ 'isBlock' ];\n\t/**\n\t * Adjusts the text color.\n\t *\n\t * @default '#1e1e1e'\n\t */\n\tcolor?: TextProps[ 'color' ];\n\t/**\n\t * Adjusts font-weight of the text.\n\t *\n\t * @default '600'\n\t */\n\tweight?: TextProps[ 'weight' ];\n};\n"],"mappings":""}