Rather avoid having to do this in the first place because it may complicate using the undo system for other undo types, or hide incorrect use of the undo system.

If this is needed for sculpt mode we could have a call that does this and run it from the operator directly.

Do we have a function for cancelling the undo initialization from sculpt mode? Cancelling the transform operator calls both sculpt_undo_push_begin and sculpt_undo_push_end, so I'm not sure why this is happening.