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/icon/index.js

@@ -0,0 +1,59 @@
+/**
+ * External dependencies
+ */
+
+/**
+ * WordPress dependencies
+ */
+import { cloneElement, createElement, isValidElement } from '@wordpress/element';
+import { SVG } from '@wordpress/primitives';
+
+/**
+ * Internal dependencies
+ */
+import Dashicon from '../dashicon';
+function Icon({
+  icon = null,
+  size = 'string' === typeof icon ? 20 : 24,
+  ...additionalProps
+}) {
+  if ('string' === typeof icon) {
+    return createElement(Dashicon, {
+      icon: icon,
+      size: size,
+      ...additionalProps
+    });
+  }
+  if (isValidElement(icon) && Dashicon === icon.type) {
+    return cloneElement(icon, {
+      ...additionalProps
+    });
+  }
+  if ('function' === typeof icon) {
+    return createElement(icon, {
+      size,
+      ...additionalProps
+    });
+  }
+  if (icon && (icon.type === 'svg' || icon.type === SVG)) {
+    const appliedProps = {
+      ...icon.props,
+      width: size,
+      height: size,
+      ...additionalProps
+    };
+    return createElement(SVG, {
+      ...appliedProps
+    });
+  }
+  if (isValidElement(icon)) {
+    return cloneElement(icon, {
+      // @ts-ignore Just forwarding the size prop along
+      size,
+      ...additionalProps
+    });
+  }
+  return icon;
+}
+export default Icon;
+//# sourceMappingURL=index.js.map

node_modules/@wordpress/components/build-module/icon/index.js.map

@@ -0,0 +1 @@
+{"version":3,"names":["cloneElement","createElement","isValidElement","SVG","Dashicon","Icon","icon","size","additionalProps","type","appliedProps","props","width","height"],"sources":["@wordpress/components/src/icon/index.tsx"],"sourcesContent":["/**\n * External dependencies\n */\nimport type { ComponentType, HTMLProps, SVGProps } from 'react';\n\n/**\n * WordPress dependencies\n */\nimport {\n\tcloneElement,\n\tcreateElement,\n\tisValidElement,\n} from '@wordpress/element';\nimport { SVG } from '@wordpress/primitives';\n\n/**\n * Internal dependencies\n */\nimport Dashicon from '../dashicon';\nimport type { IconKey as DashiconIconKey } from '../dashicon/types';\n\nexport type IconType =\n\t| DashiconIconKey\n\t| ComponentType< { size?: number } >\n\t| ( ( props: { size?: number } ) => JSX.Element )\n\t| JSX.Element;\n\ninterface BaseProps {\n\t/**\n\t * The icon to render. Supported values are: Dashicons (specified as\n\t * strings), functions, Component instances and `null`.\n\t *\n\t * @default null\n\t */\n\ticon?: IconType | null;\n\t/**\n\t * The size (width and height) of the icon.\n\t *\n\t * @default `20` when a Dashicon is rendered, `24` for all other icons.\n\t */\n\tsize?: number;\n}\n\ntype AdditionalProps< T > = T extends ComponentType< infer U >\n\t? U\n\t: T extends DashiconIconKey\n\t? SVGProps< SVGSVGElement >\n\t: {};\n\nexport type Props = BaseProps & AdditionalProps< IconType >;\n\nfunction Icon( {\n\ticon = null,\n\tsize = 'string' === typeof icon ? 20 : 24,\n\t...additionalProps\n}: Props ) {\n\tif ( 'string' === typeof icon ) {\n\t\treturn (\n\t\t\t<Dashicon\n\t\t\t\ticon={ icon }\n\t\t\t\tsize={ size }\n\t\t\t\t{ ...( additionalProps as HTMLProps< HTMLSpanElement > ) }\n\t\t\t/>\n\t\t);\n\t}\n\n\tif ( isValidElement( icon ) && Dashicon === icon.type ) {\n\t\treturn cloneElement( icon, {\n\t\t\t...additionalProps,\n\t\t} );\n\t}\n\n\tif ( 'function' === typeof icon ) {\n\t\treturn createElement( icon, {\n\t\t\tsize,\n\t\t\t...additionalProps,\n\t\t} );\n\t}\n\n\tif ( icon && ( icon.type === 'svg' || icon.type === SVG ) ) {\n\t\tconst appliedProps = {\n\t\t\t...icon.props,\n\t\t\twidth: size,\n\t\t\theight: size,\n\t\t\t...additionalProps,\n\t\t};\n\n\t\treturn <SVG { ...appliedProps } />;\n\t}\n\n\tif ( isValidElement( icon ) ) {\n\t\treturn cloneElement( icon, {\n\t\t\t// @ts-ignore Just forwarding the size prop along\n\t\t\tsize,\n\t\t\t...additionalProps,\n\t\t} );\n\t}\n\n\treturn icon;\n}\n\nexport default Icon;\n"],"mappings":"AAAA;AACA;AACA;;AAGA;AACA;AACA;AACA,SACCA,YAAY,EACZC,aAAa,EACbC,cAAc,QACR,oBAAoB;AAC3B,SAASC,GAAG,QAAQ,uBAAuB;;AAE3C;AACA;AACA;AACA,OAAOC,QAAQ,MAAM,aAAa;AAiClC,SAASC,IAAIA,CAAE;EACdC,IAAI,GAAG,IAAI;EACXC,IAAI,GAAG,QAAQ,KAAK,OAAOD,IAAI,GAAG,EAAE,GAAG,EAAE;EACzC,GAAGE;AACG,CAAC,EAAG;EACV,IAAK,QAAQ,KAAK,OAAOF,IAAI,EAAG;IAC/B,OACCL,aAAA,CAACG,QAAQ;MACRE,IAAI,EAAGA,IAAM;MACbC,IAAI,EAAGA,IAAM;MAAA,GACNC;IAAe,CACtB,CAAC;EAEJ;EAEA,IAAKN,cAAc,CAAEI,IAAK,CAAC,IAAIF,QAAQ,KAAKE,IAAI,CAACG,IAAI,EAAG;IACvD,OAAOT,YAAY,CAAEM,IAAI,EAAE;MAC1B,GAAGE;IACJ,CAAE,CAAC;EACJ;EAEA,IAAK,UAAU,KAAK,OAAOF,IAAI,EAAG;IACjC,OAAOL,aAAa,CAAEK,IAAI,EAAE;MAC3BC,IAAI;MACJ,GAAGC;IACJ,CAAE,CAAC;EACJ;EAEA,IAAKF,IAAI,KAAMA,IAAI,CAACG,IAAI,KAAK,KAAK,IAAIH,IAAI,CAACG,IAAI,KAAKN,GAAG,CAAE,EAAG;IAC3D,MAAMO,YAAY,GAAG;MACpB,GAAGJ,IAAI,CAACK,KAAK;MACbC,KAAK,EAAEL,IAAI;MACXM,MAAM,EAAEN,IAAI;MACZ,GAAGC;IACJ,CAAC;IAED,OAAOP,aAAA,CAACE,GAAG;MAAA,GAAMO;IAAY,CAAI,CAAC;EACnC;EAEA,IAAKR,cAAc,CAAEI,IAAK,CAAC,EAAG;IAC7B,OAAON,YAAY,CAAEM,IAAI,EAAE;MAC1B;MACAC,IAAI;MACJ,GAAGC;IACJ,CAAE,CAAC;EACJ;EAEA,OAAOF,IAAI;AACZ;AAEA,eAAeD,IAAI"}