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-throttle/index.js

@@ -0,0 +1,42 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = useThrottle;
+var _useMemoOne = require("use-memo-one");
+var _element = require("@wordpress/element");
+var _throttle = require("../../utils/throttle");
+/**
+ * External dependencies
+ */
+
+/**
+ * WordPress dependencies
+ */
+
+/**
+ * Internal dependencies
+ */
+
+/**
+ * Throttles a function similar to Lodash's `throttle`. A new throttled function will
+ * be returned and any scheduled calls cancelled if any of the arguments change,
+ * including the function to throttle, so please wrap functions created on
+ * render in components in `useCallback`.
+ *
+ * @see https://docs-lodash.com/v4/throttle/
+ *
+ * @template {(...args: any[]) => void} TFunc
+ *
+ * @param {TFunc}                                          fn        The function to throttle.
+ * @param {number}                                         [wait]    The number of milliseconds to throttle invocations to.
+ * @param {import('../../utils/throttle').ThrottleOptions} [options] The options object. See linked documentation for details.
+ * @return {import('../../utils/debounce').DebouncedFunc<TFunc>} Throttled function.
+ */
+function useThrottle(fn, wait, options) {
+  const throttled = (0, _useMemoOne.useMemoOne)(() => (0, _throttle.throttle)(fn, wait !== null && wait !== void 0 ? wait : 0, options), [fn, wait, options]);
+  (0, _element.useEffect)(() => () => throttled.cancel(), [throttled]);
+  return throttled;
+}
+//# sourceMappingURL=index.js.map

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

@@ -0,0 +1 @@
+{"version":3,"names":["_useMemoOne","require","_element","_throttle","useThrottle","fn","wait","options","throttled","useMemoOne","throttle","useEffect","cancel"],"sources":["@wordpress/compose/src/hooks/use-throttle/index.js"],"sourcesContent":["/**\n * External dependencies\n */\nimport { useMemoOne } from 'use-memo-one';\n\n/**\n * WordPress dependencies\n */\nimport { useEffect } from '@wordpress/element';\n\n/**\n * Internal dependencies\n */\nimport { throttle } from '../../utils/throttle';\n\n/**\n * Throttles a function similar to Lodash's `throttle`. A new throttled function will\n * be returned and any scheduled calls cancelled if any of the arguments change,\n * including the function to throttle, so please wrap functions created on\n * render in components in `useCallback`.\n *\n * @see https://docs-lodash.com/v4/throttle/\n *\n * @template {(...args: any[]) => void} TFunc\n *\n * @param {TFunc}                                          fn        The function to throttle.\n * @param {number}                                         [wait]    The number of milliseconds to throttle invocations to.\n * @param {import('../../utils/throttle').ThrottleOptions} [options] The options object. See linked documentation for details.\n * @return {import('../../utils/debounce').DebouncedFunc<TFunc>} Throttled function.\n */\nexport default function useThrottle( fn, wait, options ) {\n\tconst throttled = useMemoOne(\n\t\t() => throttle( fn, wait ?? 0, options ),\n\t\t[ fn, wait, options ]\n\t);\n\tuseEffect( () => () => throttled.cancel(), [ throttled ] );\n\treturn throttled;\n}\n"],"mappings":";;;;;;AAGA,IAAAA,WAAA,GAAAC,OAAA;AAKA,IAAAC,QAAA,GAAAD,OAAA;AAKA,IAAAE,SAAA,GAAAF,OAAA;AAbA;AACA;AACA;;AAGA;AACA;AACA;;AAGA;AACA;AACA;;AAGA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACe,SAASG,WAAWA,CAAEC,EAAE,EAAEC,IAAI,EAAEC,OAAO,EAAG;EACxD,MAAMC,SAAS,GAAG,IAAAC,sBAAU,EAC3B,MAAM,IAAAC,kBAAQ,EAAEL,EAAE,EAAEC,IAAI,aAAJA,IAAI,cAAJA,IAAI,GAAI,CAAC,EAAEC,OAAQ,CAAC,EACxC,CAAEF,EAAE,EAAEC,IAAI,EAAEC,OAAO,CACpB,CAAC;EACD,IAAAI,kBAAS,EAAE,MAAM,MAAMH,SAAS,CAACI,MAAM,CAAC,CAAC,EAAE,CAAEJ,SAAS,CAAG,CAAC;EAC1D,OAAOA,SAAS;AACjB","ignoreList":[]}