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/data/build-module/components/registry-provider/context.js

@@ -0,0 +1,57 @@
+/**
+ * WordPress dependencies
+ */
+import { createContext } from '@wordpress/element';
+
+/**
+ * Internal dependencies
+ */
+import defaultRegistry from '../../default-registry';
+export const Context = createContext(defaultRegistry);
+const {
+  Consumer,
+  Provider
+} = Context;
+
+/**
+ * A custom react Context consumer exposing the provided `registry` to
+ * children components. Used along with the RegistryProvider.
+ *
+ * You can read more about the react context api here:
+ * https://reactjs.org/docs/context.html#contextprovider
+ *
+ * @example
+ * ```js
+ * import {
+ *   RegistryProvider,
+ *   RegistryConsumer,
+ *   createRegistry
+ * } from '@wordpress/data';
+ *
+ * const registry = createRegistry( {} );
+ *
+ * const App = ( { props } ) => {
+ *   return <RegistryProvider value={ registry }>
+ *     <div>Hello There</div>
+ *     <RegistryConsumer>
+ *       { ( registry ) => (
+ *         <ComponentUsingRegistry
+ *         		{ ...props }
+ *         	  registry={ registry }
+ *       ) }
+ *     </RegistryConsumer>
+ *   </RegistryProvider>
+ * }
+ * ```
+ */
+export const RegistryConsumer = Consumer;
+
+/**
+ * A custom Context provider for exposing the provided `registry` to children
+ * components via a consumer.
+ *
+ * See <a name="#RegistryConsumer">RegistryConsumer</a> documentation for
+ * example.
+ */
+export default Provider;
+//# sourceMappingURL=context.js.map

node_modules/@wordpress/data/build-module/components/registry-provider/context.js.map

@@ -0,0 +1 @@
+{"version":3,"names":["createContext","defaultRegistry","Context","Consumer","Provider","RegistryConsumer"],"sources":["@wordpress/data/src/components/registry-provider/context.js"],"sourcesContent":["/**\n * WordPress dependencies\n */\nimport { createContext } from '@wordpress/element';\n\n/**\n * Internal dependencies\n */\nimport defaultRegistry from '../../default-registry';\n\nexport const Context = createContext( defaultRegistry );\n\nconst { Consumer, Provider } = Context;\n\n/**\n * A custom react Context consumer exposing the provided `registry` to\n * children components. Used along with the RegistryProvider.\n *\n * You can read more about the react context api here:\n * https://reactjs.org/docs/context.html#contextprovider\n *\n * @example\n * ```js\n * import {\n *   RegistryProvider,\n *   RegistryConsumer,\n *   createRegistry\n * } from '@wordpress/data';\n *\n * const registry = createRegistry( {} );\n *\n * const App = ( { props } ) => {\n *   return <RegistryProvider value={ registry }>\n *     <div>Hello There</div>\n *     <RegistryConsumer>\n *       { ( registry ) => (\n *         <ComponentUsingRegistry\n *         \t\t{ ...props }\n *         \t  registry={ registry }\n *       ) }\n *     </RegistryConsumer>\n *   </RegistryProvider>\n * }\n * ```\n */\nexport const RegistryConsumer = Consumer;\n\n/**\n * A custom Context provider for exposing the provided `registry` to children\n * components via a consumer.\n *\n * See <a name=\"#RegistryConsumer\">RegistryConsumer</a> documentation for\n * example.\n */\nexport default Provider;\n"],"mappings":"AAAA;AACA;AACA;AACA,SAASA,aAAa,QAAQ,oBAAoB;;AAElD;AACA;AACA;AACA,OAAOC,eAAe,MAAM,wBAAwB;AAEpD,OAAO,MAAMC,OAAO,GAAGF,aAAa,CAAEC,eAAgB,CAAC;AAEvD,MAAM;EAAEE,QAAQ;EAAEC;AAAS,CAAC,GAAGF,OAAO;;AAEtC;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,OAAO,MAAMG,gBAAgB,GAAGF,QAAQ;;AAExC;AACA;AACA;AACA;AACA;AACA;AACA;AACA,eAAeC,QAAQ","ignoreList":[]}

node_modules/@wordpress/data/build-module/components/registry-provider/index.js

@@ -0,0 +1,3 @@
+export { default as RegistryProvider, RegistryConsumer } from './context';
+export { default as useRegistry } from './use-registry';
+//# sourceMappingURL=index.js.map

node_modules/@wordpress/data/build-module/components/registry-provider/index.js.map

@@ -0,0 +1 @@
+{"version":3,"names":["default","RegistryProvider","RegistryConsumer","useRegistry"],"sources":["@wordpress/data/src/components/registry-provider/index.js"],"sourcesContent":["export { default as RegistryProvider, RegistryConsumer } from './context';\nexport { default as useRegistry } from './use-registry';\n"],"mappings":"AAAA,SAASA,OAAO,IAAIC,gBAAgB,EAAEC,gBAAgB,QAAQ,WAAW;AACzE,SAASF,OAAO,IAAIG,WAAW,QAAQ,gBAAgB","ignoreList":[]}

node_modules/@wordpress/data/build-module/components/registry-provider/use-registry.js

@@ -0,0 +1,53 @@
+/**
+ * WordPress dependencies
+ */
+import { useContext } from '@wordpress/element';
+
+/**
+ * Internal dependencies
+ */
+import { Context } from './context';
+
+/**
+ * A custom react hook exposing the registry context for use.
+ *
+ * This exposes the `registry` value provided via the
+ * <a href="#RegistryProvider">Registry Provider</a> to a component implementing
+ * this hook.
+ *
+ * It acts similarly to the `useContext` react hook.
+ *
+ * Note: Generally speaking, `useRegistry` is a low level hook that in most cases
+ * won't be needed for implementation. Most interactions with the `@wordpress/data`
+ * API can be performed via the `useSelect` hook,  or the `withSelect` and
+ * `withDispatch` higher order components.
+ *
+ * @example
+ * ```js
+ * import {
+ *   RegistryProvider,
+ *   createRegistry,
+ *   useRegistry,
+ * } from '@wordpress/data';
+ *
+ * const registry = createRegistry( {} );
+ *
+ * const SomeChildUsingRegistry = ( props ) => {
+ *   const registry = useRegistry();
+ *   // ...logic implementing the registry in other react hooks.
+ * };
+ *
+ *
+ * const ParentProvidingRegistry = ( props ) => {
+ *   return <RegistryProvider value={ registry }>
+ *     <SomeChildUsingRegistry { ...props } />
+ *   </RegistryProvider>
+ * };
+ * ```
+ *
+ * @return {Function}  A custom react hook exposing the registry context value.
+ */
+export default function useRegistry() {
+  return useContext(Context);
+}
+//# sourceMappingURL=use-registry.js.map

node_modules/@wordpress/data/build-module/components/registry-provider/use-registry.js.map

@@ -0,0 +1 @@
+{"version":3,"names":["useContext","Context","useRegistry"],"sources":["@wordpress/data/src/components/registry-provider/use-registry.js"],"sourcesContent":["/**\n * WordPress dependencies\n */\nimport { useContext } from '@wordpress/element';\n\n/**\n * Internal dependencies\n */\nimport { Context } from './context';\n\n/**\n * A custom react hook exposing the registry context for use.\n *\n * This exposes the `registry` value provided via the\n * <a href=\"#RegistryProvider\">Registry Provider</a> to a component implementing\n * this hook.\n *\n * It acts similarly to the `useContext` react hook.\n *\n * Note: Generally speaking, `useRegistry` is a low level hook that in most cases\n * won't be needed for implementation. Most interactions with the `@wordpress/data`\n * API can be performed via the `useSelect` hook,  or the `withSelect` and\n * `withDispatch` higher order components.\n *\n * @example\n * ```js\n * import {\n *   RegistryProvider,\n *   createRegistry,\n *   useRegistry,\n * } from '@wordpress/data';\n *\n * const registry = createRegistry( {} );\n *\n * const SomeChildUsingRegistry = ( props ) => {\n *   const registry = useRegistry();\n *   // ...logic implementing the registry in other react hooks.\n * };\n *\n *\n * const ParentProvidingRegistry = ( props ) => {\n *   return <RegistryProvider value={ registry }>\n *     <SomeChildUsingRegistry { ...props } />\n *   </RegistryProvider>\n * };\n * ```\n *\n * @return {Function}  A custom react hook exposing the registry context value.\n */\nexport default function useRegistry() {\n\treturn useContext( Context );\n}\n"],"mappings":"AAAA;AACA;AACA;AACA,SAASA,UAAU,QAAQ,oBAAoB;;AAE/C;AACA;AACA;AACA,SAASC,OAAO,QAAQ,WAAW;;AAEnC;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,eAAe,SAASC,WAAWA,CAAA,EAAG;EACrC,OAAOF,UAAU,CAAEC,OAAQ,CAAC;AAC7B","ignoreList":[]}