test: try just the pool thing

Author: serhalp

vitest.config.ts

@@ -29,11 +29,6 @@ export default defineConfig({
         singleThread: true,
       },
     },
-    // Pin to vitest@1 behavior: https://vitest.dev/guide/migration.html#hooks-are-running-in-a-stack.
-    // TODO(serhalp) Remove this and fix hanging `next-app-without-config` fixture on Windows.
-    sequence: {
-      hooks: 'parallel',
-    },
     coverage: {
       provider: 'v8',
       reporter: ['text', 'lcov'],