Saves having this defined in 20+ places. If we ever make any changes to
shear, it's 100% going to need to be applied to every usage (there will
never be a case of multiple different shears in the game).
Also fixes a mismatching definition in `ShearedNub`.
Important to make "select/deselect all" operations work on all columns
simultaneously, even if they're offscreen. Unfortunately by the nature
of how the existing selection animation works, it is hard-tied to the
update loop, so we need to compensate.