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/webpack/lib/async-modules/AsyncModuleHelpers.js

@@ -0,0 +1,53 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Haijie Xie @hai-x
+*/
+
+"use strict";
+
+const HarmonyImportDependency = require("../dependencies/HarmonyImportDependency");
+
+/** @typedef {import("../ModuleGraph")} ModuleGraph */
+/** @typedef {import("../Module")} Module */
+
+/** @typedef {Set<Module>} Modules */
+
+/**
+ * Gets outgoing async modules.
+ * @param {ModuleGraph} moduleGraph module graph
+ * @param {Module} module module
+ * @returns {Modules} set of modules
+ */
+const getOutgoingAsyncModules = (moduleGraph, module) => {
+	/** @type {Modules} */
+	const set = new Set();
+	/** @type {Modules} */
+	const seen = new Set();
+	(function g(module) {
+		if (!moduleGraph.isAsync(module) || seen.has(module)) return;
+		seen.add(module);
+		if (module.buildMeta && module.buildMeta.async) {
+			set.add(module);
+		} else {
+			const outgoingConnectionMap =
+				moduleGraph.getOutgoingConnectionsByModule(module);
+			if (outgoingConnectionMap) {
+				for (const [module, connections] of outgoingConnectionMap) {
+					if (
+						connections.some(
+							(c) =>
+								c.dependency instanceof HarmonyImportDependency &&
+								c.isTargetActive(undefined)
+						) &&
+						module
+					) {
+						g(module);
+					}
+				}
+			}
+		}
+	})(module);
+	return set;
+};
+
+module.exports.getOutgoingAsyncModules = getOutgoingAsyncModules;

node_modules/webpack/lib/async-modules/AwaitDependenciesInitFragment.js

@@ -0,0 +1,94 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+const InitFragment = require("../InitFragment");
+const RuntimeGlobals = require("../RuntimeGlobals");
+const Template = require("../Template");
+
+/** @typedef {import("webpack-sources").Source} Source */
+/** @typedef {import("../Generator").GenerateContext} GenerateContext */
+
+/** @typedef {Map<string, string>} Dependencies */
+
+/**
+ * Represents AwaitDependenciesInitFragment.
+ * @extends {InitFragment<GenerateContext>}
+ */
+class AwaitDependenciesInitFragment extends InitFragment {
+	/**
+	 * Creates an instance of AwaitDependenciesInitFragment.
+	 * @param {Dependencies} dependencies maps an import var to an async module that needs to be awaited
+	 */
+	constructor(dependencies) {
+		super(
+			undefined,
+			InitFragment.STAGE_ASYNC_DEPENDENCIES,
+			0,
+			"await-dependencies"
+		);
+		/** @type {Dependencies} */
+		this.dependencies = dependencies;
+	}
+
+	/**
+	 * Merges another await-dependencies fragment into this fragment.
+	 * @param {AwaitDependenciesInitFragment} other other AwaitDependenciesInitFragment
+	 * @returns {AwaitDependenciesInitFragment} AwaitDependenciesInitFragment
+	 */
+	merge(other) {
+		const dependencies = new Map(other.dependencies);
+		for (const [key, value] of this.dependencies) {
+			dependencies.set(key, value);
+		}
+		return new AwaitDependenciesInitFragment(dependencies);
+	}
+
+	/**
+	 * Returns the source code that will be included as initialization code.
+	 * @param {GenerateContext} context context
+	 * @returns {string | Source | undefined} the source code that will be included as initialization code
+	 */
+	getContent({ runtimeRequirements, runtimeTemplate }) {
+		runtimeRequirements.add(RuntimeGlobals.module);
+		if (this.dependencies.size === 0) {
+			return "";
+		}
+
+		const importVars = [...this.dependencies.keys()];
+		const asyncModuleValues = [...this.dependencies.values()].join(", ");
+
+		const templateInput = [
+			`var __webpack_async_dependencies__ = __webpack_handle_async_dependencies__([${asyncModuleValues}]);`
+		];
+
+		if (
+			this.dependencies.size === 1 ||
+			!runtimeTemplate.supportsDestructuring()
+		) {
+			templateInput.push(
+				"var __webpack_async_dependencies_result__ = (__webpack_async_dependencies__.then ? (await __webpack_async_dependencies__)() : __webpack_async_dependencies__);"
+			);
+			for (const [index, importVar] of importVars.entries()) {
+				templateInput.push(
+					`${importVar} = __webpack_async_dependencies_result__[${index}];`
+				);
+			}
+		} else {
+			const importVarsStr = importVars.join(", ");
+
+			templateInput.push(
+				`([${importVarsStr}] = __webpack_async_dependencies__.then ? (await __webpack_async_dependencies__)() : __webpack_async_dependencies__);`
+			);
+		}
+
+		templateInput.push("");
+
+		return Template.asString(templateInput);
+	}
+}
+
+module.exports = AwaitDependenciesInitFragment;

node_modules/webpack/lib/async-modules/InferAsyncModulesPlugin.js

@@ -0,0 +1,54 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+const HarmonyImportDependency = require("../dependencies/HarmonyImportDependency");
+
+/** @typedef {import("../Compiler")} Compiler */
+/** @typedef {import("../Module")} Module */
+
+const PLUGIN_NAME = "InferAsyncModulesPlugin";
+
+class InferAsyncModulesPlugin {
+	/**
+	 * Applies the plugin by registering its hooks on the compiler.
+	 * @param {Compiler} compiler the compiler instance
+	 * @returns {void}
+	 */
+	apply(compiler) {
+		compiler.hooks.compilation.tap(PLUGIN_NAME, (compilation) => {
+			const { moduleGraph } = compilation;
+			compilation.hooks.finishModules.tap(PLUGIN_NAME, (modules) => {
+				/** @type {Set<Module>} */
+				const queue = new Set();
+				for (const module of modules) {
+					if (module.buildMeta && module.buildMeta.async) {
+						queue.add(module);
+					}
+				}
+				for (const module of queue) {
+					moduleGraph.setAsync(module);
+					for (const [
+						originModule,
+						connections
+					] of moduleGraph.getIncomingConnectionsByOriginModule(module)) {
+						if (
+							connections.some(
+								(c) =>
+									c.dependency instanceof HarmonyImportDependency &&
+									c.isTargetActive(undefined)
+							)
+						) {
+							queue.add(/** @type {Module} */ (originModule));
+						}
+					}
+				}
+			});
+		});
+	}
+}
+
+module.exports = InferAsyncModulesPlugin;