Add Prompt as Layer Name Interface Option (Defaulted On)

[nolan778]

I'm not a fan of seeing the beginning of my long prompts in the preview layer and the new layers that are added on apply, as they are usually cut off long before I can see the difference between two layer names/prompts. I have added an option to turn this off called "Prompt as Layer Name" that is defaulted On to maintain existing behavior. Setting is described as: "Use the positive prompt as the layer name for the preview layer and new layers."

When turned off, the layer names will be "[Preview] (seed)" or "[Generated] (seed)" without the positive prompt added. This will look identical to how it currently looks when your job has an empty positive prompt.

Other changes:

• Added <no prompt> to layer name when the setting is enabled, but the job had no positive prompt.
• Appended seed to the Preview layer name, same as the new applied layer names.