Fix custom claims

[samtstern]

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Discussion

See #3876 (comment)

Testing

• New unit tests

API Changes

• Reverting a bug

[changeset-bot]

🦋 Changeset detected

Latest commit: bc49a69

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@firebase/rules-unit-testing	Patch

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[samtstern]

cc @mdirolf

[yuchenshi]

Well actually... Shouldn't we use intersection like MyInterface & {[claim: string]: any} instead? Let's see which one works better

[google-oss-bot]

Binary Size Report

Affected SDKs

No changes between base commit (4f997bc) and head commit (ac4c434).

Test Logs

• Base (4f997bce): https://github.com/firebase/firebase-js-sdk/actions/runs/296483603
• Head (ac4c4342): https://github.com/firebase/firebase-js-sdk/actions/runs/297848066

[google-oss-bot]

Size Analysis Report

Affected Products

No changes between base commit (4f997bc) and head commit (ac4c434).

Test Logs

• Base (4f997bce): https://github.com/firebase/firebase-js-sdk/actions/runs/296483603
• Head (ac4c4342): https://github.com/firebase/firebase-js-sdk/actions/runs/297848066