Fixes Breaching Hammer Mob Sprite (#4147)

# About the pull request

Mob sprite was not appearing in game, this fixes it.

# Explain why it's good for the game

Bug fix

# Testing Photographs and Procedure
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# Changelog
:cl:
fix: Synthetic Breaching Hammer will now properly appear on the user's
back when holstered.
/:cl:

Co-authored-by: Steelpoint <[email protected]>