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/date-fns/locale/it-CH/_lib/formatLong/index.js

@@ -0,0 +1,43 @@
+"use strict";
+
+var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault").default;
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = void 0;
+var _index = _interopRequireDefault(require("../../../_lib/buildFormatLongFn/index.js"));
+var dateFormats = {
+  full: 'EEEE d MMMM y',
+  long: 'd MMMM y',
+  medium: 'd MMM y',
+  short: 'dd.MM.y'
+};
+var timeFormats = {
+  full: 'HH:mm:ss zzzz',
+  long: 'HH:mm:ss z',
+  medium: 'HH:mm:ss',
+  short: 'HH:mm'
+};
+var dateTimeFormats = {
+  full: '{{date}} {{time}}',
+  long: '{{date}} {{time}}',
+  medium: '{{date}} {{time}}',
+  short: '{{date}} {{time}}'
+};
+var formatLong = {
+  date: (0, _index.default)({
+    formats: dateFormats,
+    defaultWidth: 'full'
+  }),
+  time: (0, _index.default)({
+    formats: timeFormats,
+    defaultWidth: 'full'
+  }),
+  dateTime: (0, _index.default)({
+    formats: dateTimeFormats,
+    defaultWidth: 'full'
+  })
+};
+var _default = formatLong;
+exports.default = _default;
+module.exports = exports.default;

node_modules/date-fns/locale/it-CH/index.d.ts

@@ -0,0 +1,4 @@
+// This file is generated automatically by `scripts/build/typings.js`. Please, don't change it.
+
+import { itCH } from 'date-fns/locale'
+export default itCH

node_modules/date-fns/locale/it-CH/index.js

@@ -0,0 +1,35 @@
+"use strict";
+
+var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault").default;
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = void 0;
+var _index = _interopRequireDefault(require("../it/_lib/formatDistance/index.js"));
+var _index2 = _interopRequireDefault(require("../it/_lib/formatRelative/index.js"));
+var _index3 = _interopRequireDefault(require("../it/_lib/localize/index.js"));
+var _index4 = _interopRequireDefault(require("../it/_lib/match/index.js"));
+var _index5 = _interopRequireDefault(require("./_lib/formatLong/index.js"));
+/**
+ * @type {Locale}
+ * @category Locales
+ * @summary Italian locale (Switzerland).
+ * @language Italian
+ * @iso-639-2 ita
+ * @author Mike Peyer [@maic66]{@link https://github.com/maic66}
+ */
+var locale = {
+  code: 'it-CH',
+  formatDistance: _index.default,
+  formatLong: _index5.default,
+  formatRelative: _index2.default,
+  localize: _index3.default,
+  match: _index4.default,
+  options: {
+    weekStartsOn: 1 /* Monday */,
+    firstWeekContainsDate: 4
+  }
+};
+var _default = locale;
+exports.default = _default;
+module.exports = exports.default;

node_modules/date-fns/locale/it-CH/index.js.flow

@@ -0,0 +1,35 @@
+// @flow
+// This file is generated automatically by `scripts/build/typings.js`. Please, don't change it.
+
+export type Locale = {
+  code?: string,
+  formatDistance?: (...args: Array<any>) => any,
+  formatRelative?: (...args: Array<any>) => any,
+  localize?: {
+    ordinalNumber: (...args: Array<any>) => any,
+    era: (...args: Array<any>) => any,
+    quarter: (...args: Array<any>) => any,
+    month: (...args: Array<any>) => any,
+    day: (...args: Array<any>) => any,
+    dayPeriod: (...args: Array<any>) => any,
+  },
+  formatLong?: {
+    date: (...args: Array<any>) => any,
+    time: (...args: Array<any>) => any,
+    dateTime: (...args: Array<any>) => any,
+  },
+  match?: {
+    ordinalNumber: (...args: Array<any>) => any,
+    era: (...args: Array<any>) => any,
+    quarter: (...args: Array<any>) => any,
+    month: (...args: Array<any>) => any,
+    day: (...args: Array<any>) => any,
+    dayPeriod: (...args: Array<any>) => any,
+  },
+  options?: {
+    weekStartsOn?: 0 | 1 | 2 | 3 | 4 | 5 | 6,
+    firstWeekContainsDate?: 1 | 2 | 3 | 4 | 5 | 6 | 7,
+  },
+}
+
+declare module.exports: Locale

node_modules/date-fns/locale/it-CH/package.json

@@ -0,0 +1,5 @@
+{
+  "sideEffects": false,
+  "module": "../../esm/locale/it-CH/index.js",
+  "typings": "../../typings.d.ts"
+}