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/@sentry/utils/dist/status.js

@@ -0,0 +1,24 @@
+Object.defineProperty(exports, "__esModule", { value: true });
+/**
+ * Converts an HTTP status code to sentry status {@link EventStatus}.
+ *
+ * @param code number HTTP status code
+ * @returns EventStatus
+ */
+function eventStatusFromHttpCode(code) {
+    if (code >= 200 && code < 300) {
+        return 'success';
+    }
+    if (code === 429) {
+        return 'rate_limit';
+    }
+    if (code >= 400 && code < 500) {
+        return 'invalid';
+    }
+    if (code >= 500) {
+        return 'failed';
+    }
+    return 'unknown';
+}
+exports.eventStatusFromHttpCode = eventStatusFromHttpCode;
+//# sourceMappingURL=status.js.map