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/@wordpress/components/build/grid/utils.js

@@ -0,0 +1,60 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.getAlignmentProps = getAlignmentProps;
+/**
+ * External dependencies
+ */
+
+const ALIGNMENTS = {
+  bottom: {
+    alignItems: 'flex-end',
+    justifyContent: 'center'
+  },
+  bottomLeft: {
+    alignItems: 'flex-start',
+    justifyContent: 'flex-end'
+  },
+  bottomRight: {
+    alignItems: 'flex-end',
+    justifyContent: 'flex-end'
+  },
+  center: {
+    alignItems: 'center',
+    justifyContent: 'center'
+  },
+  spaced: {
+    alignItems: 'center',
+    justifyContent: 'space-between'
+  },
+  left: {
+    alignItems: 'center',
+    justifyContent: 'flex-start'
+  },
+  right: {
+    alignItems: 'center',
+    justifyContent: 'flex-end'
+  },
+  stretch: {
+    alignItems: 'stretch'
+  },
+  top: {
+    alignItems: 'flex-start',
+    justifyContent: 'center'
+  },
+  topLeft: {
+    alignItems: 'flex-start',
+    justifyContent: 'flex-start'
+  },
+  topRight: {
+    alignItems: 'flex-start',
+    justifyContent: 'flex-end'
+  }
+};
+function getAlignmentProps(alignment) {
+  const alignmentProps = alignment ? ALIGNMENTS[alignment] : {};
+  return alignmentProps;
+}
+//# sourceMappingURL=utils.js.map