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/tsconfig-paths/lib/config-loader.d.ts

@@ -0,0 +1,33 @@
+import * as TsConfigLoader2 from "./tsconfig-loader";
+export interface ExplicitParams {
+    baseUrl: string;
+    paths: {
+        [key: string]: Array<string>;
+    };
+    mainFields?: Array<string>;
+    addMatchAll?: boolean;
+}
+export declare type TsConfigLoader = (params: TsConfigLoader2.TsConfigLoaderParams) => TsConfigLoader2.TsConfigLoaderResult;
+export interface ConfigLoaderParams {
+    cwd: string;
+    explicitParams?: ExplicitParams;
+    tsConfigLoader?: TsConfigLoader;
+}
+export interface ConfigLoaderSuccessResult {
+    resultType: "success";
+    configFileAbsolutePath: string;
+    baseUrl: string;
+    absoluteBaseUrl: string;
+    paths: {
+        [key: string]: Array<string>;
+    };
+    mainFields?: Array<string>;
+    addMatchAll?: boolean;
+}
+export interface ConfigLoaderFailResult {
+    resultType: "failed";
+    message: string;
+}
+export declare type ConfigLoaderResult = ConfigLoaderSuccessResult | ConfigLoaderFailResult;
+export declare function loadConfig(cwd?: string): ConfigLoaderResult;
+export declare function configLoader({ cwd, explicitParams, tsConfigLoader, }: ConfigLoaderParams): ConfigLoaderResult;