chore: add a instanceof/contains restriction lint (#8131)

* add a instanceof lint

* fix lint

* fix wrong toContain migrations

`expect(!el.classList).toContain('x')` asserts the opposite of the
original `expect(!el.classList.contains('x')).toBeTruthy()` — the
negation has to move to the matcher.

`LngLatBounds.contains()` is a geometry predicate, not collection
membership, so `expect(llb).toContain(ll)` never worked; reverted.

Also migrates the multi-line `classList.contains` assertions the new
rule flagged in marker and geolocate tests.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KKy5jSQhjQbiUmCSfcW95P

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Co-authored-by: Claude Opus 5 <noreply@anthropic.com>