Uzi: stock always folded when holstered, unfolds on deploy
- new w_uzi deploy_stock anim with the stock unfold, hooked up in w_uzi controller
- 3p deploy_stock updated to match the viewmodel unfold
- Uzi.cs: holstered world model always shows the stock folded (visual only, still in rifle mode)
- updated 3p aniims to match correct bolt position, fix out of sync issues