Update addCustomCSSWithScoping.ts

Author: Lukas742

packages/base/src/utils/addCustomCSSWithScoping.ts

@@ -2,6 +2,9 @@ import { attachBoot } from '@ui5/webcomponents-base/dist/Boot.js';
 import { addCustomCSS } from '@ui5/webcomponents-base/dist/Theming.js';
 import { getUi5TagWithSuffix } from './index.js';
 
+/**
+ * ⚠️ __INTERNAL__ use only! This function is not part of the public API.
+ */
 export const addCustomCSSWithScoping = (baseTagName: string, customCSS: string) => {
   attachBoot(() => {
     const finalTag = getUi5TagWithSuffix(baseTagName);