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-module/alignment-matrix-control/icon.js

@@ -0,0 +1,44 @@
+import { createElement } from "react";
+/**
+ * External dependencies
+ */
+import classnames from 'classnames';
+
+/**
+ * Internal dependencies
+ */
+import { ALIGNMENTS, getAlignmentIndex } from './utils';
+import { Root, Cell, Point } from './styles/alignment-matrix-control-icon-styles';
+const BASE_SIZE = 24;
+function AlignmentMatrixControlIcon({
+  className,
+  disablePointerEvents = true,
+  size = BASE_SIZE,
+  style = {},
+  value = 'center',
+  ...props
+}) {
+  const alignIndex = getAlignmentIndex(value);
+  const scale = (size / BASE_SIZE).toFixed(2);
+  const classes = classnames('component-alignment-matrix-control-icon', className);
+  const styles = {
+    ...style,
+    transform: `scale(${scale})`
+  };
+  return createElement(Root, {
+    ...props,
+    className: classes,
+    disablePointerEvents: disablePointerEvents,
+    role: "presentation",
+    style: styles
+  }, ALIGNMENTS.map((align, index) => {
+    const isActive = alignIndex === index;
+    return createElement(Cell, {
+      key: align
+    }, createElement(Point, {
+      isActive: isActive
+    }));
+  }));
+}
+export default AlignmentMatrixControlIcon;
+//# sourceMappingURL=icon.js.map