[native] Stop using ReanimatedJSIModulePackage on Android

Summary:
While investigating ENG-7696, I noticed this log being printed:

[REANIMATED]: Since 2.5.0, Reanimated autoinstalls on Android - you can remove getJSIModulePackage() override in MainApplication.java.

It looks like it's coming from here, which confirms that ReanimatedJSIModulePackage is no longer doing anything and is deprecated.

This diff replaces our extension of ReanimatedJSIModulePackage with an implementation of its interface JSIModulePackage.

Depends on D11660

Test Plan:

1. Confirm that Reanimated still works in Android simulator
2. Confirm that the log message is no longer printed

Reviewers: marcin, tomek

Reviewed By: tomek

Differential Revision: https://phab.comm.dev/D11663