What problem does this solve or what need does it fill?

I need a way to temporarily disable the entity cursor and instead use a global override. An example of this is a "wait" cursor: while waiting, you don't want the current hovered entity to affect the cursor shape.

What solution would you like?

Just need to add an additional resource, OverrideCursor, and then adjust the cursor setting algorithm in bevy_feathers/src/cursor.rs.