Merge branch 'kneecapper-kill-shot-fix' into 'master'

Update targeting parameters for Kneecapper and Kill Shot

Update targeting parameters for Kneecapper and Kill Shot so they will not trigger a shot or go on cooldown or use energy when targeting an empty tile. Behavior was inconsistent between the two, and Called Shots won't hit an actor that is not targeted, so targeting an empty tile is useless and may as well be prevented.

See merge request !742