add missing types for extensions

[aalves08]

Summary

Fixes #12945

Occurred changes and/or fixed issues

• Adds missing types used in extensions. Cross-checked with extension docs to see what was missing in product/pages configuration

Technical notes summary

Areas or cases that should be tested

• clone repo https://github.com/masap/supportability-review-app-210
• yarn link this PR's shell to that repo
• confirm that there are no more TS errors from the extension registration functions

Areas which could experience regressions

Screenshot/Video

Checklist

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