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/visually-hidden/component.js

@@ -0,0 +1,54 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = exports.VisuallyHidden = void 0;
+var _react = require("react");
+var _context = require("../context");
+var _styles = require("./styles");
+var _view = require("../view");
+/**
+ * External dependencies
+ */
+
+/**
+ * Internal dependencies
+ */
+
+function UnconnectedVisuallyHidden(props, forwardedRef) {
+  const {
+    style: styleProp,
+    ...contextProps
+  } = (0, _context.useContextSystem)(props, 'VisuallyHidden');
+  return (0, _react.createElement)(_view.View, {
+    ref: forwardedRef,
+    ...contextProps,
+    style: {
+      ..._styles.visuallyHidden,
+      ...(styleProp || {})
+    }
+  });
+}
+
+/**
+ * `VisuallyHidden` is a component used to render text intended to be visually
+ * hidden, but will show for alternate devices, for example a screen reader.
+ *
+ * ```jsx
+ * import { VisuallyHidden } from `@wordpress/components`;
+ *
+ * function Example() {
+ *   return (
+ *     <VisuallyHidden>
+ *       <label>Code is Poetry</label>
+ *     </VisuallyHidden>
+ *   );
+ * }
+ * ```
+ */
+const VisuallyHidden = (0, _context.contextConnect)(UnconnectedVisuallyHidden, 'VisuallyHidden');
+exports.VisuallyHidden = VisuallyHidden;
+var _default = VisuallyHidden;
+exports.default = _default;
+//# sourceMappingURL=component.js.map

node_modules/@wordpress/components/build/visually-hidden/component.js.map

@@ -0,0 +1 @@
+{"version":3,"names":["_context","require","_styles","_view","UnconnectedVisuallyHidden","props","forwardedRef","style","styleProp","contextProps","useContextSystem","_react","createElement","View","ref","visuallyHidden","VisuallyHidden","contextConnect","exports","_default","default"],"sources":["@wordpress/components/src/visually-hidden/component.tsx"],"sourcesContent":["/**\n * External dependencies\n */\nimport type { ForwardedRef } from 'react';\n\n/**\n * Internal dependencies\n */\nimport type { WordPressComponentProps } from '../context';\nimport { useContextSystem, contextConnect } from '../context';\nimport { visuallyHidden } from './styles';\nimport { View } from '../view';\nimport type { VisuallyHiddenProps } from './types';\n\nfunction UnconnectedVisuallyHidden(\n\tprops: WordPressComponentProps< VisuallyHiddenProps, 'div' >,\n\tforwardedRef: ForwardedRef< any >\n) {\n\tconst { style: styleProp, ...contextProps } = useContextSystem(\n\t\tprops,\n\t\t'VisuallyHidden'\n\t);\n\treturn (\n\t\t<View\n\t\t\tref={ forwardedRef }\n\t\t\t{ ...contextProps }\n\t\t\tstyle={ { ...visuallyHidden, ...( styleProp || {} ) } }\n\t\t/>\n\t);\n}\n\n/**\n * `VisuallyHidden` is a component used to render text intended to be visually\n * hidden, but will show for alternate devices, for example a screen reader.\n *\n * ```jsx\n * import { VisuallyHidden } from `@wordpress/components`;\n *\n * function Example() {\n *   return (\n *     <VisuallyHidden>\n *       <label>Code is Poetry</label>\n *     </VisuallyHidden>\n *   );\n * }\n * ```\n */\nexport const VisuallyHidden = contextConnect(\n\tUnconnectedVisuallyHidden,\n\t'VisuallyHidden'\n);\n\nexport default VisuallyHidden;\n"],"mappings":";;;;;;;AASA,IAAAA,QAAA,GAAAC,OAAA;AACA,IAAAC,OAAA,GAAAD,OAAA;AACA,IAAAE,KAAA,GAAAF,OAAA;AAXA;AACA;AACA;;AAGA;AACA;AACA;;AAOA,SAASG,yBAAyBA,CACjCC,KAA4D,EAC5DC,YAAiC,EAChC;EACD,MAAM;IAAEC,KAAK,EAAEC,SAAS;IAAE,GAAGC;EAAa,CAAC,GAAG,IAAAC,yBAAgB,EAC7DL,KAAK,EACL,gBACD,CAAC;EACD,OACC,IAAAM,MAAA,CAAAC,aAAA,EAACT,KAAA,CAAAU,IAAI;IACJC,GAAG,EAAGR,YAAc;IAAA,GACfG,YAAY;IACjBF,KAAK,EAAG;MAAE,GAAGQ,sBAAc;MAAE,IAAKP,SAAS,IAAI,CAAC,CAAC;IAAG;EAAG,CACvD,CAAC;AAEJ;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACO,MAAMQ,cAAc,GAAG,IAAAC,uBAAc,EAC3Cb,yBAAyB,EACzB,gBACD,CAAC;AAACc,OAAA,CAAAF,cAAA,GAAAA,cAAA;AAAA,IAAAG,QAAA,GAEaH,cAAc;AAAAE,OAAA,CAAAE,OAAA,GAAAD,QAAA"}

node_modules/@wordpress/components/build/visually-hidden/index.js

@@ -0,0 +1,14 @@
+"use strict";
+
+var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+Object.defineProperty(exports, "VisuallyHidden", {
+  enumerable: true,
+  get: function () {
+    return _component.default;
+  }
+});
+var _component = _interopRequireDefault(require("./component"));
+//# sourceMappingURL=index.js.map

node_modules/@wordpress/components/build/visually-hidden/index.js.map

@@ -0,0 +1 @@
+{"version":3,"names":["_component","_interopRequireDefault","require"],"sources":["@wordpress/components/src/visually-hidden/index.ts"],"sourcesContent":["export { default as VisuallyHidden } from './component';\n"],"mappings":";;;;;;;;;;;;AAAA,IAAAA,UAAA,GAAAC,sBAAA,CAAAC,OAAA"}

node_modules/@wordpress/components/build/visually-hidden/styles.js

@@ -0,0 +1,25 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.visuallyHidden = void 0;
+/**
+ * External dependencies
+ */
+
+const visuallyHidden = {
+  border: 0,
+  clip: 'rect(1px, 1px, 1px, 1px)',
+  WebkitClipPath: 'inset( 50% )',
+  clipPath: 'inset( 50% )',
+  height: '1px',
+  margin: '-1px',
+  overflow: 'hidden',
+  padding: 0,
+  position: 'absolute',
+  width: '1px',
+  wordWrap: 'normal'
+};
+exports.visuallyHidden = visuallyHidden;
+//# sourceMappingURL=styles.js.map

node_modules/@wordpress/components/build/visually-hidden/styles.js.map

@@ -0,0 +1 @@
+{"version":3,"names":["visuallyHidden","border","clip","WebkitClipPath","clipPath","height","margin","overflow","padding","position","width","wordWrap","exports"],"sources":["@wordpress/components/src/visually-hidden/styles.ts"],"sourcesContent":["/**\n * External dependencies\n */\nimport type { CSSProperties } from 'react';\n\nexport const visuallyHidden: CSSProperties = {\n\tborder: 0,\n\tclip: 'rect(1px, 1px, 1px, 1px)',\n\tWebkitClipPath: 'inset( 50% )',\n\tclipPath: 'inset( 50% )',\n\theight: '1px',\n\tmargin: '-1px',\n\toverflow: 'hidden',\n\tpadding: 0,\n\tposition: 'absolute',\n\twidth: '1px',\n\twordWrap: 'normal',\n};\n"],"mappings":";;;;;;AAAA;AACA;AACA;;AAGO,MAAMA,cAA6B,GAAG;EAC5CC,MAAM,EAAE,CAAC;EACTC,IAAI,EAAE,0BAA0B;EAChCC,cAAc,EAAE,cAAc;EAC9BC,QAAQ,EAAE,cAAc;EACxBC,MAAM,EAAE,KAAK;EACbC,MAAM,EAAE,MAAM;EACdC,QAAQ,EAAE,QAAQ;EAClBC,OAAO,EAAE,CAAC;EACVC,QAAQ,EAAE,UAAU;EACpBC,KAAK,EAAE,KAAK;EACZC,QAAQ,EAAE;AACX,CAAC;AAACC,OAAA,CAAAZ,cAAA,GAAAA,cAAA"}

node_modules/@wordpress/components/build/visually-hidden/types.js

@@ -0,0 +1,6 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+//# sourceMappingURL=types.js.map

node_modules/@wordpress/components/build/visually-hidden/types.js.map

@@ -0,0 +1 @@
+{"version":3,"names":[],"sources":["@wordpress/components/src/visually-hidden/types.ts"],"sourcesContent":["/**\n * External dependencies\n */\nimport type { ReactNode } from 'react';\n\nexport type VisuallyHiddenProps = {\n\t/**\n\t * The children elements.\n\t */\n\tchildren: ReactNode;\n};\n"],"mappings":""}