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/card/card-header/component.js

@@ -0,0 +1,43 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = exports.CardHeader = void 0;
+var _react = require("react");
+var _context = require("../../context");
+var _flex = require("../../flex");
+var _hook = require("./hook");
+/**
+ * External dependencies
+ */
+
+/**
+ * Internal dependencies
+ */
+
+function UnconnectedCardHeader(props, forwardedRef) {
+  const headerProps = (0, _hook.useCardHeader)(props);
+  return (0, _react.createElement)(_flex.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>
+ * ```
+ */
+const CardHeader = (0, _context.contextConnect)(UnconnectedCardHeader, 'CardHeader');
+exports.CardHeader = CardHeader;
+var _default = CardHeader;
+exports.default = _default;
+//# sourceMappingURL=component.js.map

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

@@ -0,0 +1 @@
+{"version":3,"names":["_context","require","_flex","_hook","UnconnectedCardHeader","props","forwardedRef","headerProps","useCardHeader","_react","createElement","Flex","ref","CardHeader","contextConnect","exports","_default","default"],"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":";;;;;;;AASA,IAAAA,QAAA,GAAAC,OAAA;AACA,IAAAC,KAAA,GAAAD,OAAA;AACA,IAAAE,KAAA,GAAAF,OAAA;AAXA;AACA;AACA;;AAGA;AACA;AACA;;AAOA,SAASG,qBAAqBA,CAC7BC,KAAoD,EACpDC,YAAiC,EAChC;EACD,MAAMC,WAAW,GAAG,IAAAC,mBAAa,EAAEH,KAAM,CAAC;EAE1C,OAAO,IAAAI,MAAA,CAAAC,aAAA,EAACR,KAAA,CAAAS,IAAI;IAAA,GAAMJ,WAAW;IAAGK,GAAG,EAAGN;EAAc,CAAE,CAAC;AACxD;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACO,MAAMO,UAAU,GAAG,IAAAC,uBAAc,EAAEV,qBAAqB,EAAE,YAAa,CAAC;AAACW,OAAA,CAAAF,UAAA,GAAAA,UAAA;AAAA,IAAAG,QAAA,GAEjEH,UAAU;AAAAE,OAAA,CAAAE,OAAA,GAAAD,QAAA"}

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

@@ -0,0 +1,34 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.useCardHeader = useCardHeader;
+var _element = require("@wordpress/element");
+var _context = require("../../context");
+var styles = _interopRequireWildcard(require("../styles"));
+var _useCx = require("../../utils/hooks/use-cx");
+function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function (nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }
+function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
+/**
+ * WordPress dependencies
+ */
+
+function useCardHeader(props) {
+  const {
+    className,
+    isBorderless = false,
+    isShady = false,
+    size = 'medium',
+    ...otherProps
+  } = (0, _context.useContextSystem)(props, 'CardHeader');
+  const cx = (0, _useCx.useCx)();
+  const classes = (0, _element.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/card/card-header/hook.js.map

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

@@ -0,0 +1,21 @@
+"use strict";
+
+var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+Object.defineProperty(exports, "default", {
+  enumerable: true,
+  get: function () {
+    return _component.default;
+  }
+});
+Object.defineProperty(exports, "useCardHeader", {
+  enumerable: true,
+  get: function () {
+    return _hook.useCardHeader;
+  }
+});
+var _component = _interopRequireDefault(require("./component"));
+var _hook = require("./hook");
+//# sourceMappingURL=index.js.map

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

@@ -0,0 +1 @@
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