fix(android): required compatibility for android gradle plugin 8

[mikehardy]

Description

A collection of android gradle plugin 8 compatibility fixes

• Fixes all the remaining instances where react-native-firebase modules weren't compatible yet (we were mostly there, thankfully)
• Sends a PR upstream for detox fix(android): add namespace to build.gradle for android gradle plugin 8 compatibility wix/Detox#4229 - although we're currently stuck on an old version, they'll need this I think, and our local patch is updated for AGP8
• adopts just released version of invertase/jet where I patched+released it for AGP8
• updates the test app here to use AGP8 to show the whole thing works...

Related issues

Release Summary

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

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Name	Status	Preview	Comments	Updated (UTC)
react-native-firebase	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Oct 20, 2023 11:44pm
react-native-firebase-next	❌ Failed (Inspect)			Oct 20, 2023 11:44pm

[codecov]

Codecov Report

Merging #7412 (ec727a7) into main (2d8ac14) will decrease coverage by 0.00%.
The diff coverage is n/a.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #7412      +/-   ##
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- Coverage     54.12%   54.11%   -0.00%     
  Complexity      738      738              
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  Files           248      248              
  Lines         12163    12163              
  Branches       1897     1897              
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- Hits           6582     6581       -1     
- Misses         5235     5236       +1     
  Partials        346      346