[TF2] Fix Minigun barrel movement being updated multiple times per tick

[Marioiscool246]

Fixes the minigun viewmodel having crazy high barrel spin velocities on high latency servers.

Unfixed behavior:

https://github.com/user-attachments/assets/af1d8046-454d-455a-a353-174e339dd80f

Fixed behavior:

https://github.com/user-attachments/assets/a7b333b4-16ab-43c5-a072-4c428819d6ac

[wgetJane]

btw to embed videos, make sure to have a newline directly both above and below the link

[Marioiscool246]

btw to embed videos, make sure to have a newline directly both above and below the link

Haha I thought that newline wasn't needed! Oops. Thanks!

[condor00fr]

As of the latest patch, mingun's barrels no longer rotate in third person when firing, and rotates very slowly when not firing.