Imrove Refresh button

Refresh works just bad. That is why:
- Added new loras in folder
- Clicked refresh
- Added lora node - There is no new lora in list
- Clicked Refresh again - okay, it's here
- Added next lora node - no new lora as well
- Changed workflow to another - no new lora in list too.

The only way to not click refresh after every new element is to reload the whole ComfyUI and I do so, as it's more comfortable than click refresh 100x times when I'm trying to test different lora on different workflows...