transformers

564fde14 - FIX(trainer): ensure final checkpoint is saved when resuming training (#40347)

FIX(trainer): ensure final checkpoint is saved when resuming training (#40347) * fix(trainer): ensure final checkpoint is saved when resuming training * add test * make style && slight fix of test * make style again * move test code to test_trainer * remove outdated test file * Apply style fixes --------- Co-authored-by: rangehow <rangehow@foxmail.com> Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com> Co-authored-by: Marc Sun <57196510+SunMarc@users.noreply.github.com>