feat(V3-io): allow Enum classes for Combo options

[bigcat88]

This PR adds a tiny normalization step so Combo.Input can take a Python Enum class directly as options. We expand the enum to its member .value list at construction time, which:

• eliminates repetitive [m.value for m in MyEnum] boilerplate
• ensures options stay in sync with the enum definition

The change is backward‑compatible (existing list[str] still works) and requires no frontend adjustments. Default handling remains unchanged.

Also extended typing for options and default as they can receive ints and not only str which many API nodes passes to them.

Example of the simplification(in API nodes there is around 30 such usages):

comfy_io.Combo.Input(
    "model",
    options=Text2ImageModelName,  # old code: options=[model.value for model in Text2ImageModelName],  
    default=Text2ImageModelName.seedream_3,
    tooltip="Model name",
),

[Kosinkadink]

The only change required here would be to make sure that default gets cast to the value if it is an Enum

[bigcat88]

The only change required here would be to make sure that default gets cast to the value if it is an Enum

done 🚀