Disable E2E Tests on RNTester (#47903)

Summary:
E2E tests for Android RNTester in GHA are flaky and they prevent CI to be green on main.
Given that the Branch cut is happening on Monday and that I'll be away for a week, it's better to disable them.

I'm planning to work a bit on those today and more once I'm back

## Changelog:
[Internal] - Temporarily disable E2E tests for Android

Pull Request resolved: https://github.com/facebook/react-native/pull/47903

Test Plan: GHA

Reviewed By: javache

Differential Revision: D66359177

Pulled By: cipolleschi

fbshipit-source-id: a0064418af607953cf46445613796c18fb6e1389