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/node-forge/lib/index.js

@@ -0,0 +1,33 @@
+/**
+ * Node.js module for Forge.
+ *
+ * @author Dave Longley
+ *
+ * Copyright 2011-2016 Digital Bazaar, Inc.
+ */
+module.exports = require('./forge');
+require('./aes');
+require('./aesCipherSuites');
+require('./asn1');
+require('./cipher');
+require('./des');
+require('./ed25519');
+require('./hmac');
+require('./kem');
+require('./log');
+require('./md.all');
+require('./mgf1');
+require('./pbkdf2');
+require('./pem');
+require('./pkcs1');
+require('./pkcs12');
+require('./pkcs7');
+require('./pki');
+require('./prime');
+require('./prng');
+require('./pss');
+require('./random');
+require('./rc2');
+require('./ssh');
+require('./tls');
+require('./util');