chore(deps): update to vitest v4 (#20984)

Author: sheremet-va

package.json

@@ -72,7 +72,7 @@
     "typescript": "~5.9.2",
     "typescript-eslint": "^8.46.2",
     "vite": "workspace:*",
-    "vitest": "^3.2.4"
+    "vitest": "^4.0.4"
   },
   "simple-git-hooks": {
     "pre-commit": "pnpm exec lint-staged --concurrent false"

playground/vitestGlobalSetup.ts

@@ -7,10 +7,6 @@ import { chromium } from 'playwright-chromium'
 let browserServer: BrowserServer | undefined
 
 export async function setup({ provide }: TestProject): Promise<void> {
-  process.env.NODE_ENV = process.env.VITE_TEST_BUILD
-    ? 'production'
-    : 'development'
-
   browserServer = await chromium.launchServer({
     headless: !process.env.VITE_DEBUG_SERVE,
     args: process.env.CI