fix: Fabric codegen support for new arch

[globemediaofficial]

Description

The native ad components were incorrectly implemented for React Native 0.81 with the new architecture enabled. Legacy components were being used, which caused a crash in recent versions. This PR fixes that crash by correcting the codegen and editing the native code so that ViewManager (legacy) implementations are only used for the old architecture.

Related issues

Fixes #777

Release Summary

• Corrects native ad component implementation for RN 0.81 with new architecture.
• Ensures compatibility with both legacy and new Fabric architectures on iOS.

Checklist

• I read the Contributor Guide and followed the process outlined there for submitting PRs.
  • Yes
• My change supports the following platforms;
  • iOS

Test Plan

• Verified that the app no longer crashes on iOS.
• All native ad components display correctly, including the AdMob native ad validator.

[docs-page]

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docs.page/invertase/react-native-google-mobile-ads~792

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[dylancom]

Awesome, great work!

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 36.34%. Comparing base (a34c7ba) to head (63c1330).
⚠️ Report is 164 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #792      +/-   ##
==========================================
- Coverage   43.72%   36.34%   -7.37%     
==========================================
  Files          30       37       +7     
  Lines         549      677     +128     
  Branches      151      180      +29     
==========================================
+ Hits          240      246       +6     
- Misses        309      431     +122     

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[dylancom]

@globemediaofficial why did you add the NativeViewManager interface by the way? It's already defined in the header file.

[globemediaofficial]

@dylancom Not sure how that got added... probably an accidental paste. You’re right, it’s a duplicate, so it can be removed. Sorry about that!

[mikehardy]

🎉 This PR is included in version 15.5.1 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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