fix: switch ExpectStatic any types to AsymmetricMatcher<unknown>, with DeeplyAllowMatchers<T>

[JoshuaKGoldberg]

Description

Switches the two any types to unknown AsymmetricMatcher<unknown>, and updated APIs such as toEqual<T> to deeply allow those using a new DeeplyAllowMatchers<T>.

Sending as a draft for reference.

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.
  • I don't know how to best do this. Do you want a type test somewhere? I added a types.test.ts file but am 100% sure I missed a much better way to do that
• 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:.

[netlify]

✅ Deploy Preview for vitest-dev ready!

Built without sensitive environment variables

Name	Link
🔨 Latest commit	3ce8784
🔍 Latest deploy log	https://app.netlify.com/sites/vitest-dev/deploys/674f4d9078b4770008db36bb
😎 Deploy Preview	https://deploy-preview-7016--vitest-dev.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[sheremet-va]

How is this going to work?

expect(obj).toEqual<{
  id: string
  name: string
}>({
  id: expect.any(String),
  name: 'Amelia',
})

Error:

Type 'unknown' is not assignable to type 'string'.ts(2322)

[JoshuaKGoldberg]

How is this going to work?

expect(obj).toEqual<{
  id: string
  name: string
}>({
  id: expect.any(String),
  name: 'Amelia',
})

Error:

Type 'unknown' is not assignable to type 'string'.ts(2322)

Aha! Updated to use a DeeplyAllowMatchers.

[JoshuaKGoldberg]

This keeps getting updated and I don't know why. 🤷 I'll revert it if it's still here if & when the PR gets un-drafted.