Avoid requiring manual config for trace view integration

[hi-ogawa]

• follow-up to feat: support opening trace view #811 (comment)

vscode/README.md

Lines 138 to 154 in 121fa53

	### Trace View
	With Vitest 5, the extension can open recorded browser interactions for a selected test in [Vitest Trace View](https://vitest.dev/guide/browser/trace-view.html). Enable Trace View and the HTML reporter in your existing Browser Mode configuration:
	```ts
	import { configDefaults, defineConfig } from 'vitest/config'
	export default defineConfig({
	test: {
	reporters: [...configDefaults.reporters, 'html'],
	browser: {
	// Your existing Browser Mode configuration
	traceView: true,
	},
	},
	})
	```

One approach would be to add explicit Run with trace view button, which triggers a run with auto configured html reporter and traceView.