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/framer-motion/dist/es/context/MotionContext/create.mjs

@@ -0,0 +1,13 @@
+import { useContext, useMemo } from 'react';
+import { MotionContext } from './index.mjs';
+import { getCurrentTreeVariants } from './utils.mjs';
+
+function useCreateMotionContext(props) {
+    const { initial, animate } = getCurrentTreeVariants(props, useContext(MotionContext));
+    return useMemo(() => ({ initial, animate }), [variantLabelsAsDependency(initial), variantLabelsAsDependency(animate)]);
+}
+function variantLabelsAsDependency(prop) {
+    return Array.isArray(prop) ? prop.join(" ") : prop;
+}
+
+export { useCreateMotionContext };

node_modules/framer-motion/dist/es/context/MotionContext/index.mjs

@@ -0,0 +1,5 @@
+import { createContext } from 'react';
+
+const MotionContext = createContext({});
+
+export { MotionContext };

node_modules/framer-motion/dist/es/context/MotionContext/utils.mjs

@@ -0,0 +1,17 @@
+import { isVariantLabel } from '../../render/utils/is-variant-label.mjs';
+import { isControllingVariants } from '../../render/utils/is-controlling-variants.mjs';
+
+function getCurrentTreeVariants(props, context) {
+    if (isControllingVariants(props)) {
+        const { initial, animate } = props;
+        return {
+            initial: initial === false || isVariantLabel(initial)
+                ? initial
+                : undefined,
+            animate: isVariantLabel(animate) ? animate : undefined,
+        };
+    }
+    return props.inherit !== false ? context : {};
+}
+
+export { getCurrentTreeVariants };