Fixes 2 gun runtime sources

[fira]

About the pull request

This fixes two issues happening on live game:

• The XM88 does not check for successful wielding before registering signals, presumably causing overriding errors in logs.
• M56D/M2C HMGs do not correctly reset the autofire component when the operator is removed. This causes it to try to keep firing without an operator which generates runtimes (presumably in burst fire mode). In addition this may solve other issues such as the fabled "can use HMG while dead" one, but I can't confirm it.

Explain why it's good for the game

Readable logs and less clunky interactions down the line

Changelog

🆑
fix: M56D/M2C should now properly stop firing when they stop being used.
/:cl: