invalidate cond cache if distilled CFG changed (#1240)

* Update processing.py

add distilled_cfg_scale to params that invalidate cond cache

* Update ui.py

distilled CFG and CFG step size 0.1 (from 0.5)

modules/processing.py

@@ -419,6 +419,7 @@ class StableDiffusionProcessing:
 
         return (
             required_prompts,
+            self.distilled_cfg_scale,
             steps,
             hires_steps,
             use_old_scheduling,