Update androidx app compat to 1.7.0 (#49594)

Summary:
Update androidx app compat to the latest version.

This is needed as part of https://github.com/facebook/react-native/pull/49486 to have access to `fullyDrawnReporter`.

## Changelog:

[ANDROID] [CHANGED] - Update androidx app compat to 1.7.0

Pull Request resolved: https://github.com/facebook/react-native/pull/49594

Test Plan: Tested in RN tester that it builds fine and works properly.

Reviewed By: Abbondanzo

Differential Revision: D69988202

Pulled By: cortinico

fbshipit-source-id: 0329aa84a76327db535ddba8acf059ebbf1dbdfc