model_dump: Refactor renderTensor into a helper method (#57655)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/57655
Now lots of code is shared between tensor and qtensor rendering. Net
lines of code is actually +1, but it should result in a savings if/when
we implement some of those todos.
Test Plan: Clicked around in Chrome.
Reviewed By: malfet
Differential Revision: D28531395
Pulled By: dreiss
fbshipit-source-id: 190a04ed587b54d27f3410246763cd636c0634be
