chore: use inline vitest env comment

packages/vue/__tests__/e2e/Transition.spec.ts

@@ -1,3 +1,5 @@
+// @vitest-environment jsdom
+
 import { E2E_TIMEOUT, setupPuppeteer } from './e2eUtils'
 import path from 'node:path'
 import { Transition, createApp, h, nextTick, ref } from 'vue'

packages/vue/__tests__/e2e/TransitionGroup.spec.ts

@@ -1,3 +1,5 @@
+// @vitest-environment jsdom
+
 import { E2E_TIMEOUT, setupPuppeteer } from './e2eUtils'
 import path from 'node:path'
 import { createApp, ref } from 'vue'

vitest.config.ts

@@ -80,7 +80,6 @@ export default defineConfig({
         extends: true,
         test: {
           name: 'e2e',
-          environment: 'jsdom',
           poolOptions: {
             threads: {
               singleThread: !!process.env.CI,