Fix Nightlies for Android (#44847)

Summary:
While migrating from CCI to GHA, we mistakenly set the `ORG_GRADLE_PROJECT_reactNativeArchitectures` wrongly. The result was that the nightly was building only 1 architecture for android instead of all of them.

This change fixes that, but asking GHA to build all the architectures when running nightlies

bypass-github-export-checks

## Changelog:
[Internal] - Build all the architectures for android when running nightlies

Pull Request resolved: #44847

Test Plan: Run a nightly from the branch and see it working

Reviewed By: huntie

Differential Revision: D58347697

Pulled By: cipolleschi

fbshipit-source-id: 43a2b83ba9183e6f5a11d1e6f6a27df622ee8cc6

.github/workflows/nightly.yml

@@ -635,7 +635,7 @@ jobs:
         run: |
           git config --global --add safe.directory /__w/react-native/react-native
           echo "GRADLE_OPTS = $GRADLE_OPTS"
-          export ORG_GRADLE_PROJECT_reactNativeArchitectures="arm64-v8a"
+          export ORG_GRADLE_PROJECT_reactNativeArchitectures="armeabi-v7a,arm64-v8a,x86,x86_64"
           node ./scripts/releases-ci/publish-npm.js -t nightly
       - name: Zip Maven Artifacts from /tmp/maven-local
         working-directory: /tmp