Skip PEFT LoRA Scaling if the scale is 1.0 (#7576)
* Skip scaling if scale is identity
* move check for weight one to scale and unscale lora
* fix code style/quality
* Empty-Commit
---------
Co-authored-by: Steven Munn <stevenjmunn@gmail.com>
Co-authored-by: Sayak Paul <spsayakpaul@gmail.com>
Co-authored-by: Steven Munn <5297082+stevenjlm@users.noreply.github.com>
