Upload android artifacts to s3 (#4300)

Summary:
According to the comment in https://github.com/pytorch/executorch/issues/4288 , add the uploading step back so that TorchChat can consume the artifacts from S3

Pull Request resolved: https://github.com/pytorch/executorch/pull/4300

Reviewed By: huydhn, kirklandsign

Differential Revision: D59925505

Pulled By: guangy10

fbshipit-source-id: ce389fb16adb30d51240fdff655111580f07130b