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-module/hooks/use-dragging/index.js

@@ -0,0 +1,72 @@
+/**
+ * WordPress dependencies
+ */
+import { useCallback, useEffect, useRef, useState } from '@wordpress/element';
+
+/**
+ * Internal dependencies
+ */
+import useIsomorphicLayoutEffect from '../use-isomorphic-layout-effect';
+
+// Event handlers that are triggered from `document` listeners accept a MouseEvent,
+// while those triggered from React listeners accept a React.MouseEvent.
+/**
+ * @param {Object}                                  props
+ * @param {(e: import('react').MouseEvent) => void} props.onDragStart
+ * @param {(e: MouseEvent) => void}                 props.onDragMove
+ * @param {(e?: MouseEvent) => void}                props.onDragEnd
+ */
+export default function useDragging({
+  onDragStart,
+  onDragMove,
+  onDragEnd
+}) {
+  const [isDragging, setIsDragging] = useState(false);
+  const eventsRef = useRef({
+    onDragStart,
+    onDragMove,
+    onDragEnd
+  });
+  useIsomorphicLayoutEffect(() => {
+    eventsRef.current.onDragStart = onDragStart;
+    eventsRef.current.onDragMove = onDragMove;
+    eventsRef.current.onDragEnd = onDragEnd;
+  }, [onDragStart, onDragMove, onDragEnd]);
+
+  /** @type {(e: MouseEvent) => void} */
+  const onMouseMove = useCallback(event => eventsRef.current.onDragMove && eventsRef.current.onDragMove(event), []);
+  /** @type {(e?: MouseEvent) => void} */
+  const endDrag = useCallback(event => {
+    if (eventsRef.current.onDragEnd) {
+      eventsRef.current.onDragEnd(event);
+    }
+    document.removeEventListener('mousemove', onMouseMove);
+    document.removeEventListener('mouseup', endDrag);
+    setIsDragging(false);
+  }, []);
+  /** @type {(e: import('react').MouseEvent) => void} */
+  const startDrag = useCallback(event => {
+    if (eventsRef.current.onDragStart) {
+      eventsRef.current.onDragStart(event);
+    }
+    document.addEventListener('mousemove', onMouseMove);
+    document.addEventListener('mouseup', endDrag);
+    setIsDragging(true);
+  }, []);
+
+  // Remove the global events when unmounting if needed.
+  useEffect(() => {
+    return () => {
+      if (isDragging) {
+        document.removeEventListener('mousemove', onMouseMove);
+        document.removeEventListener('mouseup', endDrag);
+      }
+    };
+  }, [isDragging]);
+  return {
+    startDrag,
+    endDrag,
+    isDragging
+  };
+}
+//# sourceMappingURL=index.js.map

node_modules/@wordpress/compose/build-module/hooks/use-dragging/index.js.map

@@ -0,0 +1 @@
+{"version":3,"names":["useCallback","useEffect","useRef","useState","useIsomorphicLayoutEffect","useDragging","onDragStart","onDragMove","onDragEnd","isDragging","setIsDragging","eventsRef","current","onMouseMove","event","endDrag","document","removeEventListener","startDrag","addEventListener"],"sources":["@wordpress/compose/src/hooks/use-dragging/index.js"],"sourcesContent":["/**\n * WordPress dependencies\n */\nimport { useCallback, useEffect, useRef, useState } from '@wordpress/element';\n\n/**\n * Internal dependencies\n */\nimport useIsomorphicLayoutEffect from '../use-isomorphic-layout-effect';\n\n// Event handlers that are triggered from `document` listeners accept a MouseEvent,\n// while those triggered from React listeners accept a React.MouseEvent.\n/**\n * @param {Object}                                  props\n * @param {(e: import('react').MouseEvent) => void} props.onDragStart\n * @param {(e: MouseEvent) => void}                 props.onDragMove\n * @param {(e?: MouseEvent) => void}                props.onDragEnd\n */\nexport default function useDragging( { onDragStart, onDragMove, onDragEnd } ) {\n\tconst [ isDragging, setIsDragging ] = useState( false );\n\n\tconst eventsRef = useRef( {\n\t\tonDragStart,\n\t\tonDragMove,\n\t\tonDragEnd,\n\t} );\n\tuseIsomorphicLayoutEffect( () => {\n\t\teventsRef.current.onDragStart = onDragStart;\n\t\teventsRef.current.onDragMove = onDragMove;\n\t\teventsRef.current.onDragEnd = onDragEnd;\n\t}, [ onDragStart, onDragMove, onDragEnd ] );\n\n\t/** @type {(e: MouseEvent) => void} */\n\tconst onMouseMove = useCallback(\n\t\t( event ) =>\n\t\t\teventsRef.current.onDragMove &&\n\t\t\teventsRef.current.onDragMove( event ),\n\t\t[]\n\t);\n\t/** @type {(e?: MouseEvent) => void} */\n\tconst endDrag = useCallback( ( event ) => {\n\t\tif ( eventsRef.current.onDragEnd ) {\n\t\t\teventsRef.current.onDragEnd( event );\n\t\t}\n\t\tdocument.removeEventListener( 'mousemove', onMouseMove );\n\t\tdocument.removeEventListener( 'mouseup', endDrag );\n\t\tsetIsDragging( false );\n\t}, [] );\n\t/** @type {(e: import('react').MouseEvent) => void} */\n\tconst startDrag = useCallback( ( event ) => {\n\t\tif ( eventsRef.current.onDragStart ) {\n\t\t\teventsRef.current.onDragStart( event );\n\t\t}\n\t\tdocument.addEventListener( 'mousemove', onMouseMove );\n\t\tdocument.addEventListener( 'mouseup', endDrag );\n\t\tsetIsDragging( true );\n\t}, [] );\n\n\t// Remove the global events when unmounting if needed.\n\tuseEffect( () => {\n\t\treturn () => {\n\t\t\tif ( isDragging ) {\n\t\t\t\tdocument.removeEventListener( 'mousemove', onMouseMove );\n\t\t\t\tdocument.removeEventListener( 'mouseup', endDrag );\n\t\t\t}\n\t\t};\n\t}, [ isDragging ] );\n\n\treturn {\n\t\tstartDrag,\n\t\tendDrag,\n\t\tisDragging,\n\t};\n}\n"],"mappings":"AAAA;AACA;AACA;AACA,SAASA,WAAW,EAAEC,SAAS,EAAEC,MAAM,EAAEC,QAAQ,QAAQ,oBAAoB;;AAE7E;AACA;AACA;AACA,OAAOC,yBAAyB,MAAM,iCAAiC;;AAEvE;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,eAAe,SAASC,WAAWA,CAAE;EAAEC,WAAW;EAAEC,UAAU;EAAEC;AAAU,CAAC,EAAG;EAC7E,MAAM,CAAEC,UAAU,EAAEC,aAAa,CAAE,GAAGP,QAAQ,CAAE,KAAM,CAAC;EAEvD,MAAMQ,SAAS,GAAGT,MAAM,CAAE;IACzBI,WAAW;IACXC,UAAU;IACVC;EACD,CAAE,CAAC;EACHJ,yBAAyB,CAAE,MAAM;IAChCO,SAAS,CAACC,OAAO,CAACN,WAAW,GAAGA,WAAW;IAC3CK,SAAS,CAACC,OAAO,CAACL,UAAU,GAAGA,UAAU;IACzCI,SAAS,CAACC,OAAO,CAACJ,SAAS,GAAGA,SAAS;EACxC,CAAC,EAAE,CAAEF,WAAW,EAAEC,UAAU,EAAEC,SAAS,CAAG,CAAC;;EAE3C;EACA,MAAMK,WAAW,GAAGb,WAAW,CAC5Bc,KAAK,IACNH,SAAS,CAACC,OAAO,CAACL,UAAU,IAC5BI,SAAS,CAACC,OAAO,CAACL,UAAU,CAAEO,KAAM,CAAC,EACtC,EACD,CAAC;EACD;EACA,MAAMC,OAAO,GAAGf,WAAW,CAAIc,KAAK,IAAM;IACzC,IAAKH,SAAS,CAACC,OAAO,CAACJ,SAAS,EAAG;MAClCG,SAAS,CAACC,OAAO,CAACJ,SAAS,CAAEM,KAAM,CAAC;IACrC;IACAE,QAAQ,CAACC,mBAAmB,CAAE,WAAW,EAAEJ,WAAY,CAAC;IACxDG,QAAQ,CAACC,mBAAmB,CAAE,SAAS,EAAEF,OAAQ,CAAC;IAClDL,aAAa,CAAE,KAAM,CAAC;EACvB,CAAC,EAAE,EAAG,CAAC;EACP;EACA,MAAMQ,SAAS,GAAGlB,WAAW,CAAIc,KAAK,IAAM;IAC3C,IAAKH,SAAS,CAACC,OAAO,CAACN,WAAW,EAAG;MACpCK,SAAS,CAACC,OAAO,CAACN,WAAW,CAAEQ,KAAM,CAAC;IACvC;IACAE,QAAQ,CAACG,gBAAgB,CAAE,WAAW,EAAEN,WAAY,CAAC;IACrDG,QAAQ,CAACG,gBAAgB,CAAE,SAAS,EAAEJ,OAAQ,CAAC;IAC/CL,aAAa,CAAE,IAAK,CAAC;EACtB,CAAC,EAAE,EAAG,CAAC;;EAEP;EACAT,SAAS,CAAE,MAAM;IAChB,OAAO,MAAM;MACZ,IAAKQ,UAAU,EAAG;QACjBO,QAAQ,CAACC,mBAAmB,CAAE,WAAW,EAAEJ,WAAY,CAAC;QACxDG,QAAQ,CAACC,mBAAmB,CAAE,SAAS,EAAEF,OAAQ,CAAC;MACnD;IACD,CAAC;EACF,CAAC,EAAE,CAAEN,UAAU,CAAG,CAAC;EAEnB,OAAO;IACNS,SAAS;IACTH,OAAO;IACPN;EACD,CAAC;AACF","ignoreList":[]}