feat(client): migration old package to rspack (#15068)

#### PR Dependency Tree


* **PR #15068** 👈

This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **Chores**
* Upgraded Vitest across packages to 4.1.8 and bumped Tailwind PostCSS
to 4.3.0
* CLI/tooling updated to support the media-capture-playground package
and adjust build/dev server behavior

* **Bug Fixes**
  * Improved workspace deletion reliability in the Electron app

* **Refactor**
* Simplified media capture playground build setup (build/config
adjustments)

* **Tests**
* Made tests more robust by preserving/restoring environment state
during runs
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/frontend/apps/electron/vitest.config.ts

@@ -2,13 +2,11 @@
 import { resolve } from 'node:path';
 import { fileURLToPath } from 'node:url';
 
-import react from '@vitejs/plugin-react';
 import { defineConfig } from 'vitest/config';
 
 const rootDir = fileURLToPath(new URL('../../../..', import.meta.url));
 
 export default defineConfig({
-  plugins: [react()],
   resolve: {
     alias: {
       // prevent tests using two different sources of yjs