Firestore: database.test.ts: add unit tests for long polling settings interpretation

[dconeybe]

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[changeset-bot]

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Latest commit: 959c0e7

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[google-oss-bot]

Size Report ¹

Affected Products

No changes between base commit (68b79e1) and merge commit (84e1293).

Test Logs

• Base (68b79e1): https://github.com/firebase/firebase-js-sdk/actions/runs/4747768416
• Merge (84e1293): https://github.com/firebase/firebase-js-sdk/actions/runs/4749870416

1. https://storage.googleapis.com/firebase-sdk-metric-reports/eztDpfcWHv.html

[google-oss-bot]

Size Analysis Report ¹

Affected Products

No changes between base commit (68b79e1) and merge commit (84e1293).

Test Logs

• Base (68b79e1): https://github.com/firebase/firebase-js-sdk/actions/runs/4747768416
• Merge (84e1293): https://github.com/firebase/firebase-js-sdk/actions/runs/4749870416

1. https://storage.googleapis.com/firebase-sdk-metric-reports/jgKic3uPiI.html