Add `preview` provider option to `unit-test` runner when using Vitest

[yjaaidi]

Command

test

Description

While the preview provider is limited compared to 3rd party providers such as Playwright or Webdriverio, it comes handy in restricted environments when users can't install or run browsers.

For instance, adding such a provider would allow tests to run on environments such as Stackblitz.

Describe the solution you'd like

No response

Describe alternatives you've considered

No response

[angular-robot]

This feature request is now candidate for our backlog! In the next phase, the community has 60 days to upvote. If the request receives more than 20 upvotes, we'll move it to our consideration list.

You can find more details about the feature request process in our documentation.

[alan-agius4]

Closed via #31711