[lazerg]

Why: Firestore calls made outside any active span each became their own root span with no context. This passes requiresParentSpan: true to the channel binding, like the other db integrations.

How to review: The fix is the option in firebase/instrumentation.ts. The Deno test runs addDoc before, inside and after a parent span and checks that only the one inside creates a span.

Closes #25800

[cursor]

Stale Bugbot comment from a previous run.

[Lms24]

@lazerg we'll review this, as well as other PRs but to be very clear: We do not appreciate "contribution farming" and opening 7 PRs in a row without once asking if we're fine with you taking over those changes. Our contribution guidelines clearly tell external contributors to ask a maintainer first. An unfortunate change we had to make given that writing code no longer costs time, but reviewing agent-written code is the painful part now. Please keep this in mind for the next contribution. Thank you.

[cursor]

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