fix: add native ad compatibility layer

[wjaykim]

Description

Removed codegen event emitter(added in RN 0.76.2) related code and replaced it with GoogleMobileAdsNativeEventEmitter, which is shared legacy event emitter(which is used in full screen ads).

Also I removed unnecessary constructor passing contexts in classes extending ViewGroupManager, which breaks android build in rn version lower than 0.75.

Related issues

Fixes #678

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 __tests__e2e__
  • jest tests added or updated in __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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[wjaykim]

Waiting for response of a issue about includesGeneratedCode option in facebook/react-native#48621, because build is still breaking with the option.

[asp3]

any update on getting this merged?

[rdjuric]

We've been testing this PR with a patch-package and everything seems to be working well.

We're on RN 0.74.5, using the old arch. App built correctly and all events are firing normally.

[dylancom]

Why not upgrade to 0.76 and set old arch true. RN0.78 is already released.
Removing the new EventEmitter blocks progress on this package.