[torch][repeat_interleave] Remove stream sync when output_size is given for scalar repeats (#60965)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/60965
Same as title. Simple change on tensor creation.
Test Plan: Rely on existing signals and verify manually that sync is not happening.
Reviewed By: ngimel
Differential Revision: D29461773
fbshipit-source-id: 21d6ebfba08449da39fc7f109958f6c6978a4f32
