perf(browser): fork jest-dom instead of bundling it

[sheremet-va]

Description

Migrating away from bundling jest-dom can save us up to 40ms of load time for every test. This can stack very fast depending on the number of tests. We can also reuse PW's locator methods that can already work with accessibility which reduces overall size of the bundle.

In the future, we can also make a breaking change to simplify the expect.element into a simple expect since we now control all matchers:

- await expect.element(locator).toBeVisible()
+ await expect(locator).toBeVisible()

Please don't delete this checklist! Before submitting the PR, please make sure you do the following:

• It's really useful if your PR references an issue where it is discussed ahead of time. If the feature is substantial or introduces breaking changes without a discussion, PR might be closed.
• Ideally, include a test that fails without this PR but passes with it.
• Please, don't make changes to pnpm-lock.yaml unless you introduce a new test example.

Tests

• Run the tests with pnpm test:ci.

Documentation

• If you introduce new functionality, document it. You can run documentation with pnpm run docs command.

Changesets

• Changes in changelog are generated from PR name. Please, make sure that it explains your changes in an understandable manner. Please, prefix changeset messages with feat:, fix:, perf:, docs:, or chore:.

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[hi-ogawa]

Looks good to me! Just have a few questions about testing.

[hi-ogawa]

Looks good! I didn't check every assertions one by one, but picked some and compared with jest-dom and I got the idea.

I spotted a few left-overs of testing-library/jest-dom in the doc

vitest/packages/browser/jest-dom.d.ts

Lines 365 to 366 in fd6c417

	* [toBeChecked](https://github.com/testing-library/jest-dom#tobechecked) or
	* [toHaveFormValues](https://github.com/testing-library/jest-dom#tohaveformvalues).

[sheremet-va]

Looks good! I didn't check every assertions one by one, but picked some and compared with jest-dom and I got the idea.

I spotted a few left-overs of testing-library/jest-dom in the doc

vitest/packages/browser/jest-dom.d.ts

Lines 365 to 366 in fd6c417

	* [toBeChecked](https://github.com/testing-library/jest-dom#tobechecked) or
	* [toHaveFormValues](https://github.com/testing-library/jest-dom#tohaveformvalues).

Should be fixed now 👍🏻