patch: apply menu updates for relevant types only

[pintza]

This PR:

• Modifying the updateMenu function to only await the specific image type needed for the current context
• Maintain a promise cache to avoid repetitive calls.
• Improving error handling by properly catching and logging errors without affecting the UI

The changes optimize performance by ensuring that only the necessary image data is loaded when displaying checkpoints or loras in the menu.
These optimizations are particularly beneficial when dealing with large checkpoint or lora remote libraries, as they reduce unnecessary networking and accelerate the ComfyUI GUI load.

[pythongosssss]

Hi, this will cause a noticable delay in rendering the menu (set combo mode to e.g. tree, click widget, see original context menu, then see it convert to tree), and looks like it will also break reloading the list

What performance issues are you seeing causing it to slowdown startup when preloading the image list?

[pintza]

I’m using remote storage for my models, and each lookup for a missing file ends up being quite heavy. I totally get that deferring the lookup might add a delay when opening the menu, but right now, even without using the menu at all, just having this repo added as a custom node noticeably slows down the UI on startup. That’s what I was hoping to avoid with this change.