add new lr_scheduler_type: step_lr #30468
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What does this PR do?
Added a new learning rate scheduler:
step_lr
. This was implemented through theTYPE_TO_SCHEDULER_FUNCTION get_step_lr
, based on the existing classtorch.optim.lr_scheduler.StepLR
. It retains the same parameters as other functions and usesnum_training_steps
to representstep_size
, ensuring consistency.