Dropdown boxes should mirror image layer list

[yrkim98]

Requested feature

Dropdown boxes should mirror the image layer list. Currently the dropdown box is reversed when selecting a layer in the workflow select widget.

Use case

This will make it easier for users to correlate a napari layer with a layer selection in the workflow select widget.

If this change is NOT made...

Check all that apply, by entering an x inside the brackets:

• [x] Everything's fine! But it would be cool if this work happened at some point in the future.

[yrkim98]

fixed in branch https://github.com/AllenCell/napari-allencell-segmenter/tree/bugfix/reverse_layer_list_dropdown