Hotfix to flatpack building

Created by: dylanstrategie

This applies a fool-proof fix to being able to use shut-down welding tools to build flatpacks

Eventually someone needs to unfuck the Mechanic module as a whole, because I'm getting runtimes when building flatpacks which are unrelated to my changes and I can't find where to snap to stop playing welding noises even if the step fails

Fixes #3608 (closed)