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/@ariakit/react/esm/__chunks/L4M2Z5VM.js

@@ -0,0 +1,38 @@
+"use client";
+
+// src/combobox.ts
+import { useComboboxStore } from "@ariakit/react-core/combobox/combobox-store";
+import { useComboboxContext } from "@ariakit/react-core/combobox/combobox-context";
+import { Combobox } from "@ariakit/react-core/combobox/combobox";
+import { ComboboxProvider } from "@ariakit/react-core/combobox/combobox-provider";
+import { ComboboxCancel } from "@ariakit/react-core/combobox/combobox-cancel";
+import { ComboboxDisclosure } from "@ariakit/react-core/combobox/combobox-disclosure";
+import { ComboboxGroupLabel } from "@ariakit/react-core/combobox/combobox-group-label";
+import { ComboboxGroup } from "@ariakit/react-core/combobox/combobox-group";
+import { ComboboxItemCheck } from "@ariakit/react-core/combobox/combobox-item-check";
+import { ComboboxItemValue } from "@ariakit/react-core/combobox/combobox-item-value";
+import { ComboboxItem } from "@ariakit/react-core/combobox/combobox-item";
+import { ComboboxLabel } from "@ariakit/react-core/combobox/combobox-label";
+import { ComboboxList } from "@ariakit/react-core/combobox/combobox-list";
+import { ComboboxPopover } from "@ariakit/react-core/combobox/combobox-popover";
+import { ComboboxRow } from "@ariakit/react-core/combobox/combobox-row";
+import { ComboboxSeparator } from "@ariakit/react-core/combobox/combobox-separator";
+
+export {
+  useComboboxStore,
+  useComboboxContext,
+  Combobox,
+  ComboboxProvider,
+  ComboboxCancel,
+  ComboboxDisclosure,
+  ComboboxGroupLabel,
+  ComboboxGroup,
+  ComboboxItemCheck,
+  ComboboxItemValue,
+  ComboboxItem,
+  ComboboxLabel,
+  ComboboxList,
+  ComboboxPopover,
+  ComboboxRow,
+  ComboboxSeparator
+};