fix(database, types): harmonize database.on() w/firebase-js-sdk

[mikehardy]

Description

This builds on the work both upstream and in this repo of @SCasarotto

Related issues

Fixes #4545
Supercedes #4550
Upstream firebase-js-sdk firebase/firebase-js-sdk#4250

Release Summary

commit message is conventional, rebase merge

Checklist

• I read the Contributor Guide and followed the process outlined there for submitting PRs.
  • Yes
• My change supports the following platforms;
  • Android
  • iOS
• My change includes tests;
  • e2e tests added or updated in packages/\*\*/e2e
  • jest tests added or updated in packages/\*\*/__tests__
• I have updated TypeScript types that are affected by my change.
• This is a breaking change;
  • Yes
  • No

Test Plan

---

Think react-native-firebase is great? Please consider supporting the project with any of the below:

• 👉 Star this repo on GitHub ⭐️
• 👉 Follow React Native Firebase and Invertase on Twitter

[vercel]

This pull request is being automatically deployed with Vercel (learn more).
To see the status of your deployment, click below or on the icon next to each commit.

🔍 Inspect: https://vercel.com/invertase/react-native-firebase/7yWkZkW8vorA8b1pUNL43rgs1Nfn
✅ Preview: https://react-native-firebase-git-mikehardy-database-types-invertase.vercel.app

[codecov]

Codecov Report

Merging #5141 (a6a269b) into master (d2838ff) will not change coverage.
The diff coverage is n/a.

❗ Current head a6a269b differs from pull request most recent head f1eddb6. Consider uploading reports for the commit f1eddb6 to get more accurate results

@@           Coverage Diff           @@
##           master    #5141   +/-   ##
=======================================
  Coverage   88.99%   88.99%           
=======================================
  Files         109      109           
  Lines        3739     3739           
  Branches      358      358           
=======================================
  Hits         3327     3327           
  Misses        367      367           
  Partials       45       45