Fixes borgs duplicating ammunition with the munition clamp upgrade

[IndusRobot]

About The Pull Request

Fixes borg contents not being checked when interacting with multiple powder racks or PDC racks. Normally when do_after removes contents from a human's hands it cancels all other pending do_afters. With borg munition clamps their hands do not change, so without refactors their contents will be checked in post by the machine.

Why It's Good For The Game

No fun allowed. Fixes https://github.com/BeeStation/NSV13/issues/2616

Testing Photographs and Procedure

Screenshots&Videos

https://github.com/BeeStation/NSV13/assets/22532898/4fd528b9-fb6d-4ad2-8788-b323441bdd2a

Changelog

:cl: fix: fix borgs duplicating ammunition in deck turret and PDC /:cl: