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/custom-gradient-picker/styles/custom-gradient-picker-styles.js

@@ -0,0 +1,39 @@
+import _styled from "@emotion/styled/base";
+function _EMOTION_STRINGIFIED_CSS_ERROR__() { return "You have tried to stringify object returned from `css` function. It isn't supposed to be used directly (e.g. as value of the `className` prop), but rather handed to emotion so it can handle it (e.g. as value of `css` prop)."; }
+/**
+ * External dependencies
+ */
+
+/**
+ * Internal dependencies
+ */
+import { FlexBlock } from '../../flex';
+export const SelectWrapper = /*#__PURE__*/_styled(FlexBlock, process.env.NODE_ENV === "production" ? {
+  target: "e10bzpgi1"
+} : {
+  target: "e10bzpgi1",
+  label: "SelectWrapper"
+})(process.env.NODE_ENV === "production" ? {
+  name: "1gvx10y",
+  styles: "flex-grow:5"
+} : {
+  name: "1gvx10y",
+  styles: "flex-grow:5",
+  map: "/*# sourceMappingURL=data:application/json;charset=utf-8;base64,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 */",
+  toString: _EMOTION_STRINGIFIED_CSS_ERROR__
+});
+export const AccessoryWrapper = /*#__PURE__*/_styled(FlexBlock, process.env.NODE_ENV === "production" ? {
+  target: "e10bzpgi0"
+} : {
+  target: "e10bzpgi0",
+  label: "AccessoryWrapper"
+})(process.env.NODE_ENV === "production" ? {
+  name: "1gvx10y",
+  styles: "flex-grow:5"
+} : {
+  name: "1gvx10y",
+  styles: "flex-grow:5",
+  map: "/*# sourceMappingURL=data:application/json;charset=utf-8;base64,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 */",
+  toString: _EMOTION_STRINGIFIED_CSS_ERROR__
+});
+//# sourceMappingURL=custom-gradient-picker-styles.js.map

node_modules/@wordpress/components/build-module/custom-gradient-picker/styles/custom-gradient-picker-styles.js.map

@@ -0,0 +1 @@
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