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/babel-runtime/core-js/symbol/async-iterator.js

@@ -0,0 +1 @@
+module.exports = { "default": require("core-js/library/fn/symbol/async-iterator"), __esModule: true };

node_modules/babel-runtime/core-js/symbol/for.js

@@ -0,0 +1 @@
+module.exports = { "default": require("core-js/library/fn/symbol/for"), __esModule: true };

node_modules/babel-runtime/core-js/symbol/has-instance.js

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+module.exports = { "default": require("core-js/library/fn/symbol/has-instance"), __esModule: true };

node_modules/babel-runtime/core-js/symbol/is-concat-spreadable.js

@@ -0,0 +1 @@
+module.exports = { "default": require("core-js/library/fn/symbol/is-concat-spreadable"), __esModule: true };

node_modules/babel-runtime/core-js/symbol/iterator.js

@@ -0,0 +1 @@
+module.exports = { "default": require("core-js/library/fn/symbol/iterator"), __esModule: true };

node_modules/babel-runtime/core-js/symbol/key-for.js

@@ -0,0 +1 @@
+module.exports = { "default": require("core-js/library/fn/symbol/key-for"), __esModule: true };

node_modules/babel-runtime/core-js/symbol/match.js

@@ -0,0 +1 @@
+module.exports = { "default": require("core-js/library/fn/symbol/match"), __esModule: true };

node_modules/babel-runtime/core-js/symbol/observable.js

@@ -0,0 +1 @@
+module.exports = { "default": require("core-js/library/fn/symbol/observable"), __esModule: true };

node_modules/babel-runtime/core-js/symbol/replace.js

@@ -0,0 +1 @@
+module.exports = { "default": require("core-js/library/fn/symbol/replace"), __esModule: true };

node_modules/babel-runtime/core-js/symbol/search.js

@@ -0,0 +1 @@
+module.exports = { "default": require("core-js/library/fn/symbol/search"), __esModule: true };

node_modules/babel-runtime/core-js/symbol/species.js

@@ -0,0 +1 @@
+module.exports = { "default": require("core-js/library/fn/symbol/species"), __esModule: true };

node_modules/babel-runtime/core-js/symbol/split.js

@@ -0,0 +1 @@
+module.exports = { "default": require("core-js/library/fn/symbol/split"), __esModule: true };

node_modules/babel-runtime/core-js/symbol/to-primitive.js

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+module.exports = { "default": require("core-js/library/fn/symbol/to-primitive"), __esModule: true };

node_modules/babel-runtime/core-js/symbol/to-string-tag.js

@@ -0,0 +1 @@
+module.exports = { "default": require("core-js/library/fn/symbol/to-string-tag"), __esModule: true };

node_modules/babel-runtime/core-js/symbol/unscopables.js

@@ -0,0 +1 @@
+module.exports = { "default": require("core-js/library/fn/symbol/unscopables"), __esModule: true };