Update toc.yaml files for v8 doc generation

[hsubox76]

Recent changes added some top level doc pages which were not added to the toc.yaml files, so they won't appear in the reference docs.

[changeset-bot]

⚠️ No Changeset found

Latest commit: 89b03f0

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[google-oss-bot]

Binary Size Report

Affected SDKs

No changes between base commit (e83826a) and head commit (9f513a4).

Test Logs

• Base (e83826af): https://github.com/firebase/firebase-js-sdk/actions/runs/1124760980
• Head (9f513a45): https://github.com/firebase/firebase-js-sdk/actions/runs/1125058587

[egilmorez]

LG, thanks!

[google-oss-bot]

Size Analysis Report

Affected Products

No changes between base commit (e83826a) and head commit (9f513a4).

Test Logs

• Base (e83826a): https://github.com/firebase/firebase-js-sdk/actions/runs/1124760980
• Head (9f513a4): https://github.com/firebase/firebase-js-sdk/actions/runs/1125058587