pytorch-lightning

bc858a34 - Fix FSDPPrecision rejecting a scaler for 16-mixed precision (#21831)

Fix FSDPPrecision rejecting a scaler for 16-mixed precision (#21831) The scaler guard read self.precision before it was assigned, so it saw the base class default 32-true and raised for a 16-mixed scaler; the else branch also dropped a user-provided scaler. Use the local precision argument in the guard and keep the scaler.