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/ip-address/dist/v6/helpers.d.ts

@@ -0,0 +1,18 @@
+/**
+ * @returns {String} the string with all zeroes contained in a <span>
+ */
+export declare function spanAllZeroes(s: string): string;
+/**
+ * @returns {String} the string with each character contained in a <span>
+ */
+export declare function spanAll(s: string, offset?: number): string;
+/**
+ * @returns {String} the string with leading zeroes contained in a <span>
+ */
+export declare function spanLeadingZeroes(address: string): string;
+/**
+ * Groups an address
+ * @returns {String} a grouped address
+ */
+export declare function simpleGroup(addressString: string, offset?: number): string[];
+//# sourceMappingURL=helpers.d.ts.map