there seems be a diff for optimizer about using [] and [{"params":}, {"params":}] params

because this change(commit: df31d808) will cause other issues, such as a change in the value of QA monitoring, so revert temporary.

modified batch_size per gpu and update_freq in MobileViTv3_S.yaml for training with 4 gpus

This reverts commit 35fc732dadac4761852b18512b5c5df8785e36df.