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/axios/lib/platform/browser/classes/Blob.js

@@ -0,0 +1,3 @@
+'use strict';
+
+export default typeof Blob !== 'undefined' ? Blob : null;

node_modules/axios/lib/platform/browser/classes/FormData.js

@@ -0,0 +1,3 @@
+'use strict';
+
+export default typeof FormData !== 'undefined' ? FormData : null;

node_modules/axios/lib/platform/browser/classes/URLSearchParams.js

@@ -0,0 +1,4 @@
+'use strict';
+
+import AxiosURLSearchParams from '../../../helpers/AxiosURLSearchParams.js';
+export default typeof URLSearchParams !== 'undefined' ? URLSearchParams : AxiosURLSearchParams;

node_modules/axios/lib/platform/browser/index.js

@@ -0,0 +1,13 @@
+import URLSearchParams from './classes/URLSearchParams.js';
+import FormData from './classes/FormData.js';
+import Blob from './classes/Blob.js';
+
+export default {
+  isBrowser: true,
+  classes: {
+    URLSearchParams,
+    FormData,
+    Blob,
+  },
+  protocols: ['http', 'https', 'file', 'blob', 'url', 'data'],
+};

node_modules/axios/lib/platform/common/utils.js

@@ -0,0 +1,52 @@
+const hasBrowserEnv = typeof window !== 'undefined' && typeof document !== 'undefined';
+
+const _navigator = (typeof navigator === 'object' && navigator) || undefined;
+
+/**
+ * Determine if we're running in a standard browser environment
+ *
+ * This allows axios to run in a web worker, and react-native.
+ * Both environments support XMLHttpRequest, but not fully standard globals.
+ *
+ * web workers:
+ *  typeof window -> undefined
+ *  typeof document -> undefined
+ *
+ * react-native:
+ *  navigator.product -> 'ReactNative'
+ * nativescript
+ *  navigator.product -> 'NativeScript' or 'NS'
+ *
+ * @returns {boolean}
+ */
+const hasStandardBrowserEnv =
+  hasBrowserEnv &&
+  (!_navigator || ['ReactNative', 'NativeScript', 'NS'].indexOf(_navigator.product) < 0);
+
+/**
+ * Determine if we're running in a standard browser webWorker environment
+ *
+ * Although the `isStandardBrowserEnv` method indicates that
+ * `allows axios to run in a web worker`, the WebWorker will still be
+ * filtered out due to its judgment standard
+ * `typeof window !== 'undefined' && typeof document !== 'undefined'`.
+ * This leads to a problem when axios post `FormData` in webWorker
+ */
+const hasStandardBrowserWebWorkerEnv = (() => {
+  return (
+    typeof WorkerGlobalScope !== 'undefined' &&
+    // eslint-disable-next-line no-undef
+    self instanceof WorkerGlobalScope &&
+    typeof self.importScripts === 'function'
+  );
+})();
+
+const origin = (hasBrowserEnv && window.location.href) || 'http://localhost';
+
+export {
+  hasBrowserEnv,
+  hasStandardBrowserWebWorkerEnv,
+  hasStandardBrowserEnv,
+  _navigator as navigator,
+  origin,
+};

node_modules/axios/lib/platform/index.js

@@ -0,0 +1,7 @@
+import platform from './node/index.js';
+import * as utils from './common/utils.js';
+
+export default {
+  ...utils,
+  ...platform,
+};

node_modules/axios/lib/platform/node/classes/FormData.js

@@ -0,0 +1,3 @@
+import FormData from 'form-data';
+
+export default FormData;

node_modules/axios/lib/platform/node/classes/URLSearchParams.js

@@ -0,0 +1,4 @@
+'use strict';
+
+import url from 'url';
+export default url.URLSearchParams;

node_modules/axios/lib/platform/node/index.js

@@ -0,0 +1,37 @@
+import crypto from 'crypto';
+import URLSearchParams from './classes/URLSearchParams.js';
+import FormData from './classes/FormData.js';
+
+const ALPHA = 'abcdefghijklmnopqrstuvwxyz';
+
+const DIGIT = '0123456789';
+
+const ALPHABET = {
+  DIGIT,
+  ALPHA,
+  ALPHA_DIGIT: ALPHA + ALPHA.toUpperCase() + DIGIT,
+};
+
+const generateString = (size = 16, alphabet = ALPHABET.ALPHA_DIGIT) => {
+  let str = '';
+  const { length } = alphabet;
+  const randomValues = new Uint32Array(size);
+  crypto.randomFillSync(randomValues);
+  for (let i = 0; i < size; i++) {
+    str += alphabet[randomValues[i] % length];
+  }
+
+  return str;
+};
+
+export default {
+  isNode: true,
+  classes: {
+    URLSearchParams,
+    FormData,
+    Blob: (typeof Blob !== 'undefined' && Blob) || null,
+  },
+  ALPHABET,
+  generateString,
+  protocols: ['http', 'https', 'file', 'data'],
+};