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/playwright/lib/transform/babelBundle.js

@@ -0,0 +1,43 @@
+"use strict";
+var __defProp = Object.defineProperty;
+var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
+var __getOwnPropNames = Object.getOwnPropertyNames;
+var __hasOwnProp = Object.prototype.hasOwnProperty;
+var __export = (target, all) => {
+  for (var name in all)
+    __defProp(target, name, { get: all[name], enumerable: true });
+};
+var __copyProps = (to, from, except, desc) => {
+  if (from && typeof from === "object" || typeof from === "function") {
+    for (let key of __getOwnPropNames(from))
+      if (!__hasOwnProp.call(to, key) && key !== except)
+        __defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
+  }
+  return to;
+};
+var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
+var babelBundle_exports = {};
+__export(babelBundle_exports, {
+  babelParse: () => babelParse,
+  babelTransform: () => babelTransform,
+  codeFrameColumns: () => codeFrameColumns,
+  declare: () => declare,
+  traverse: () => traverse,
+  types: () => types
+});
+module.exports = __toCommonJS(babelBundle_exports);
+const codeFrameColumns = require("./babelBundleImpl").codeFrameColumns;
+const declare = require("./babelBundleImpl").declare;
+const types = require("./babelBundleImpl").types;
+const traverse = require("./babelBundleImpl").traverse;
+const babelTransform = require("./babelBundleImpl").babelTransform;
+const babelParse = require("./babelBundleImpl").babelParse;
+// Annotate the CommonJS export names for ESM import in node:
+0 && (module.exports = {
+  babelParse,
+  babelTransform,
+  codeFrameColumns,
+  declare,
+  traverse,
+  types
+});