invalidate cond cache if distilled CFG changed

[DenOfEquity]

• adds one line to include distilled_cfg_scale in the parameters that invalidate the cond cache
• two single character changes for step size for distilled CFG and normal CFG, from 0.5 to 0.1 - better control for newer models in my experience.

https://github.com/lllyasviel/stable-diffusion-webui-forge/issues/1025 https://github.com/lllyasviel/stable-diffusion-webui-forge/issues/1200