test: fix flaky tests

[bluwy]

Retry this test 3 times 😬

vite/playground/ssr-vue/__tests__/ssr-vue.spec.ts

Lines 164 to 171 in ea09fde

	test('hmr', async () => {
	// This is test is flaky in Mac CI, but can't be reproduced locally. Wait until
	// network idle to avoid the issue. TODO: This may be caused by a bug when
	// modifying a file while loading, we should remove this guard
	await page.goto(url, { waitUntil: 'networkidle' })
	editFile('src/pages/Home.vue', (code) => code.replace('Home', 'changed'))
	await untilUpdated(() => page.textContent('h1'), 'changed')
	})

We're not editing any files before that tests so I'm not sure what's causing the flakiness. I think it started after the dep upgrade PR: #10160

[patak-dev]

Let's merge this one for now. cc @sapphi-red since you were checking the deps PR. I did re-run several times CI for it. Let's keep an eye on HMR and review this again before releasing 3.2