test: restore 5 workers on Windows e2e (#19188)

packages/app/playwright.config.ts

@@ -6,8 +6,7 @@ const serverHost = process.env.PLAYWRIGHT_SERVER_HOST ?? "127.0.0.1"
 const serverPort = process.env.PLAYWRIGHT_SERVER_PORT ?? "4096"
 const command = `bun run dev -- --host 0.0.0.0 --port ${port}`
 const reuse = !process.env.CI
-const workers =
-  Number(process.env.PLAYWRIGHT_WORKERS ?? (process.env.CI ? (process.platform === "win32" ? 2 : 5) : 0)) || undefined
+const workers = Number(process.env.PLAYWRIGHT_WORKERS ?? (process.env.CI ? 5 : 0)) || undefined
 
 export default defineConfig({
   testDir: "./e2e",