Do not depend on an ENV variable when publishing and setting the RN version (#34746)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/34746

The changes made in
https://github.com/facebook/react-native/pull/34694
introduced the need to have the env variable TMP_PUBLISH_DIR for the publishing and set-rn-version scripts to work.
This break any usage of set-rn-version when the env variable is not set upfront.

With this change, we are creating a temp folder in the scope that requires it (e.g. set-rn-version.js) and then passing the path to the save/revert functions.

## Changelog
[Internal] [Added] - Do not depend on an ENV variable when publishing and setting the RN version.

Reviewed By: cipolleschi

Differential Revision: D39683565

fbshipit-source-id: 21d85d1c16c4cb7324636ceb5eba626ff8cbb775