Disable callbacks when extension is disabled

[adieyal]

Ensure that callbacks (apart from settings and wildcards manager), only run when dynamic prompts is enabled. This builds on https://github.com/adieyal/sd-dynamic-prompts/pull/648

[adieyal]

and keep the module name the same? script_protocol? or change it to sddp_script?

[akx]

Now that I think of it, I'm not sure the protocol is actually required at all – couldn't we just use the actual script object as a type (guarded against circular imports)?

if TYPE_CHECKING:
    from dynamic_prompts.dynamic_prompting import Script as SDDPScript

[adieyal]

Now that I think of it, I'm not sure the protocol is actually required at all – couldn't we just use the actual script object as a type (guarded against circular imports)?

if TYPE_CHECKING:
    from dynamic_prompts.dynamic_prompting import Script as SDDPScript

Happy to do that too. I'll make the change.