Move React Native publishing URLs to Central Portal (#51693)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/51693

This moves React Native to use the Central Portal URLs rather than the legacy OSSRH ones.
See https://github.com/gradle-nexus/publish-plugin for more context.

Changelog:
[Internal] [Changed] -

Reviewed By: cipolleschi

Differential Revision: D75673984

fbshipit-source-id: 1de6746809eed72f232eac0c3fb4d809c2046620