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/compose/build/hooks/use-focus-on-mount/index.js

@@ -0,0 +1,84 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = useFocusOnMount;
+var _element = require("@wordpress/element");
+var _dom = require("@wordpress/dom");
+/**
+ * WordPress dependencies
+ */
+
+/**
+ * Hook used to focus the first tabbable element on mount.
+ *
+ * @param {boolean | 'firstElement'} focusOnMount Focus on mount mode.
+ * @return {import('react').RefCallback<HTMLElement>} Ref callback.
+ *
+ * @example
+ * ```js
+ * import { useFocusOnMount } from '@wordpress/compose';
+ *
+ * const WithFocusOnMount = () => {
+ *     const ref = useFocusOnMount()
+ *     return (
+ *         <div ref={ ref }>
+ *             <Button />
+ *             <Button />
+ *         </div>
+ *     );
+ * }
+ * ```
+ */
+function useFocusOnMount(focusOnMount = 'firstElement') {
+  const focusOnMountRef = (0, _element.useRef)(focusOnMount);
+
+  /**
+   * Sets focus on a DOM element.
+   *
+   * @param {HTMLElement} target The DOM element to set focus to.
+   * @return {void}
+   */
+  const setFocus = target => {
+    target.focus({
+      // When focusing newly mounted dialogs,
+      // the position of the popover is often not right on the first render
+      // This prevents the layout shifts when focusing the dialogs.
+      preventScroll: true
+    });
+  };
+
+  /** @type {import('react').MutableRefObject<ReturnType<setTimeout> | undefined>} */
+  const timerId = (0, _element.useRef)();
+  (0, _element.useEffect)(() => {
+    focusOnMountRef.current = focusOnMount;
+  }, [focusOnMount]);
+  (0, _element.useEffect)(() => {
+    return () => {
+      if (timerId.current) {
+        clearTimeout(timerId.current);
+      }
+    };
+  }, []);
+  return (0, _element.useCallback)(node => {
+    var _node$ownerDocument$a;
+    if (!node || focusOnMountRef.current === false) {
+      return;
+    }
+    if (node.contains((_node$ownerDocument$a = node.ownerDocument?.activeElement) !== null && _node$ownerDocument$a !== void 0 ? _node$ownerDocument$a : null)) {
+      return;
+    }
+    if (focusOnMountRef.current === 'firstElement') {
+      timerId.current = setTimeout(() => {
+        const firstTabbable = _dom.focus.tabbable.find(node)[0];
+        if (firstTabbable) {
+          setFocus(firstTabbable);
+        }
+      }, 0);
+      return;
+    }
+    setFocus(node);
+  }, []);
+}
+//# sourceMappingURL=index.js.map

node_modules/@wordpress/compose/build/hooks/use-focus-on-mount/index.js.map

@@ -0,0 +1 @@
+{"version":3,"names":["_element","require","_dom","useFocusOnMount","focusOnMount","focusOnMountRef","useRef","setFocus","target","focus","preventScroll","timerId","useEffect","current","clearTimeout","useCallback","node","_node$ownerDocument$a","contains","ownerDocument","activeElement","setTimeout","firstTabbable","tabbable","find"],"sources":["@wordpress/compose/src/hooks/use-focus-on-mount/index.js"],"sourcesContent":["/**\n * WordPress dependencies\n */\nimport { useRef, useEffect, useCallback } from '@wordpress/element';\nimport { focus } from '@wordpress/dom';\n\n/**\n * Hook used to focus the first tabbable element on mount.\n *\n * @param {boolean | 'firstElement'} focusOnMount Focus on mount mode.\n * @return {import('react').RefCallback<HTMLElement>} Ref callback.\n *\n * @example\n * ```js\n * import { useFocusOnMount } from '@wordpress/compose';\n *\n * const WithFocusOnMount = () => {\n *     const ref = useFocusOnMount()\n *     return (\n *         <div ref={ ref }>\n *             <Button />\n *             <Button />\n *         </div>\n *     );\n * }\n * ```\n */\nexport default function useFocusOnMount( focusOnMount = 'firstElement' ) {\n\tconst focusOnMountRef = useRef( focusOnMount );\n\n\t/**\n\t * Sets focus on a DOM element.\n\t *\n\t * @param {HTMLElement} target The DOM element to set focus to.\n\t * @return {void}\n\t */\n\tconst setFocus = ( target ) => {\n\t\ttarget.focus( {\n\t\t\t// When focusing newly mounted dialogs,\n\t\t\t// the position of the popover is often not right on the first render\n\t\t\t// This prevents the layout shifts when focusing the dialogs.\n\t\t\tpreventScroll: true,\n\t\t} );\n\t};\n\n\t/** @type {import('react').MutableRefObject<ReturnType<setTimeout> | undefined>} */\n\tconst timerId = useRef();\n\n\tuseEffect( () => {\n\t\tfocusOnMountRef.current = focusOnMount;\n\t}, [ focusOnMount ] );\n\n\tuseEffect( () => {\n\t\treturn () => {\n\t\t\tif ( timerId.current ) {\n\t\t\t\tclearTimeout( timerId.current );\n\t\t\t}\n\t\t};\n\t}, [] );\n\n\treturn useCallback( ( node ) => {\n\t\tif ( ! node || focusOnMountRef.current === false ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( node.contains( node.ownerDocument?.activeElement ?? null ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( focusOnMountRef.current === 'firstElement' ) {\n\t\t\ttimerId.current = setTimeout( () => {\n\t\t\t\tconst firstTabbable = focus.tabbable.find( node )[ 0 ];\n\n\t\t\t\tif ( firstTabbable ) {\n\t\t\t\t\tsetFocus( firstTabbable );\n\t\t\t\t}\n\t\t\t}, 0 );\n\n\t\t\treturn;\n\t\t}\n\n\t\tsetFocus( node );\n\t}, [] );\n}\n"],"mappings":";;;;;;AAGA,IAAAA,QAAA,GAAAC,OAAA;AACA,IAAAC,IAAA,GAAAD,OAAA;AAJA;AACA;AACA;;AAIA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACe,SAASE,eAAeA,CAAEC,YAAY,GAAG,cAAc,EAAG;EACxE,MAAMC,eAAe,GAAG,IAAAC,eAAM,EAAEF,YAAa,CAAC;;EAE9C;AACD;AACA;AACA;AACA;AACA;EACC,MAAMG,QAAQ,GAAKC,MAAM,IAAM;IAC9BA,MAAM,CAACC,KAAK,CAAE;MACb;MACA;MACA;MACAC,aAAa,EAAE;IAChB,CAAE,CAAC;EACJ,CAAC;;EAED;EACA,MAAMC,OAAO,GAAG,IAAAL,eAAM,EAAC,CAAC;EAExB,IAAAM,kBAAS,EAAE,MAAM;IAChBP,eAAe,CAACQ,OAAO,GAAGT,YAAY;EACvC,CAAC,EAAE,CAAEA,YAAY,CAAG,CAAC;EAErB,IAAAQ,kBAAS,EAAE,MAAM;IAChB,OAAO,MAAM;MACZ,IAAKD,OAAO,CAACE,OAAO,EAAG;QACtBC,YAAY,CAAEH,OAAO,CAACE,OAAQ,CAAC;MAChC;IACD,CAAC;EACF,CAAC,EAAE,EAAG,CAAC;EAEP,OAAO,IAAAE,oBAAW,EAAIC,IAAI,IAAM;IAAA,IAAAC,qBAAA;IAC/B,IAAK,CAAED,IAAI,IAAIX,eAAe,CAACQ,OAAO,KAAK,KAAK,EAAG;MAClD;IACD;IAEA,IAAKG,IAAI,CAACE,QAAQ,EAAAD,qBAAA,GAAED,IAAI,CAACG,aAAa,EAAEC,aAAa,cAAAH,qBAAA,cAAAA,qBAAA,GAAI,IAAK,CAAC,EAAG;MACjE;IACD;IAEA,IAAKZ,eAAe,CAACQ,OAAO,KAAK,cAAc,EAAG;MACjDF,OAAO,CAACE,OAAO,GAAGQ,UAAU,CAAE,MAAM;QACnC,MAAMC,aAAa,GAAGb,UAAK,CAACc,QAAQ,CAACC,IAAI,CAAER,IAAK,CAAC,CAAE,CAAC,CAAE;QAEtD,IAAKM,aAAa,EAAG;UACpBf,QAAQ,CAAEe,aAAc,CAAC;QAC1B;MACD,CAAC,EAAE,CAAE,CAAC;MAEN;IACD;IAEAf,QAAQ,CAAES,IAAK,CAAC;EACjB,CAAC,EAAE,EAAG,CAAC;AACR","ignoreList":[]}