Fix resume_from_checkpoint for deepspeed (#21735)
* Fix resume_from_checkpoint for deepspeed
Fix resume_from_checkpoint for deepspeed, by ensuring that the deepspeed engine is the one to load the checkpoint.
* Empty commit to trigger CI
* Removed deepspeed skipping
Removed deepspeed skipping inside the _load_from_checkpoint function, as it is obsolete
* another adjustment
* Trigger CI
* trigger circleci
* style
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Co-authored-by: ydshieh <ydshieh@users.noreply.github.com>
Co-authored-by: Stas Bekman <stas@stason.org>