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/@babel/helper-optimise-call-expression/lib/index.js

@@ -0,0 +1,33 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = optimiseCallExpression;
+var _t = require("@babel/types");
+const {
+  callExpression,
+  identifier,
+  isIdentifier,
+  isSpreadElement,
+  memberExpression,
+  optionalCallExpression,
+  optionalMemberExpression
+} = _t;
+function optimiseCallExpression(callee, thisNode, args, optional) {
+  if (args.length === 1 && isSpreadElement(args[0]) && isIdentifier(args[0].argument, {
+    name: "arguments"
+  })) {
+    if (optional) {
+      return optionalCallExpression(optionalMemberExpression(callee, identifier("apply"), false, true), [thisNode, args[0].argument], false);
+    }
+    return callExpression(memberExpression(callee, identifier("apply")), [thisNode, args[0].argument]);
+  } else {
+    if (optional) {
+      return optionalCallExpression(optionalMemberExpression(callee, identifier("call"), false, true), [thisNode, ...args], false);
+    }
+    return callExpression(memberExpression(callee, identifier("call")), [thisNode, ...args]);
+  }
+}
+
+//# sourceMappingURL=index.js.map