[RN][CI]Update the testing-script to use github actions

[cipolleschi]

Summary:

With the migration to GHA, we are updating the testing scripts to work with the new CI.

There are a bit of shenanigans due to:

• How GHA archives artifacts => they are all .zip files, so I had to play around with unzipping them
• GHA seems to create a different commit, like if it is forking the repo instead of using it. I think that it is how the checkout action works. Note: this might be a problem for the Create React Native Release workflow because it has to commit on the stable branch!
• Android is building only the simulator architecture when running from regular CI. The app is not configured to run only on that, so the RNTestProject was a failing because it was trying to build all the available architectures. It is an easy fix in the user project space when release testing.

Changelog:

[Internal] - Update the testing script to work with the new CI

Test Plan:

Tested locally.

• [iOS] RNTester - Hermes ✅
• [iOS] RNTester - JSC ✅
• [Android] RNTester - Hermes ✅
• [Android] RNTester - JSC ✅
• [iOS] RNTestProject - Hermes ✅ (The project is created correctly and it builds, crash at runtime for Fix default accessor for unstable_fuseboxEnabled (RNTester crash) #44926)
• [iOS] RNTestProject - JSC ✅ (The project is created correctly and it builds, crash at runtime for Fix default accessor for unstable_fuseboxEnabled (RNTester crash) #44926)
• [Android] RNTester - Hermes ✅ (Needed to build only the simulator architecture)
• [Android] RNTester - JSC ✅ (Needed to build only the simulator architecture)

[analysis-bot]

Platform	Engine	Arch	Size (bytes)	Diff
android	hermes	arm64-v8a	20,365,505	-54
android	hermes	armeabi-v7a	n/a	--
android	hermes	x86	n/a	--
android	hermes	x86_64	n/a	--
android	jsc	arm64-v8a	23,569,563	-60
android	jsc	armeabi-v7a	n/a	--
android	jsc	x86	n/a	--
android	jsc	x86_64	n/a	--

Base commit: e78742a
Branch: main

[facebook-github-bot]

@cipolleschi has imported this pull request. If you are a Meta employee, you can view this diff on Phabricator.

[facebook-github-bot]

@cipolleschi has imported this pull request. If you are a Meta employee, you can view this diff on Phabricator.

[facebook-github-bot]

@cipolleschi merged this pull request in f1a362d.

[github-actions]

This pull request was successfully merged by @cipolleschi in f1a362d.

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