[Feature] Dynamically update UI fields based on 3D vs 2D #109
Description
Currently, all UI fields are shown, regardless if they're relevant or not.
This is particularly evident in the AdjustMovingImage widget.
Ideally, the adjust_moving_image_pixel_size_z and data_orientation_field (once #108 is merged) should only show up if the selected moving image is 3D.