Fix muzzle flashes for other players (#10454)

Content.Client/Weapons/Ranged/Systems/GunSystem.cs

@@ -63,7 +63,7 @@ public sealed partial class GunSystem : SharedGunSystem
         base.Initialize();
         UpdatesOutsidePrediction = true;
         SubscribeLocalEvent<AmmoCounterComponent, ItemStatusCollectMessage>(OnAmmoCounterCollect);
-        SubscribeLocalEvent<GunComponent, MuzzleFlashEvent>(OnMuzzleFlash);
+        SubscribeAllEvent<MuzzleFlashEvent>(OnMuzzleFlash);
 
         // Plays animated effects on the client.
         SubscribeNetworkEvent<HitscanEvent>(OnHitscan);
@@ -72,9 +72,9 @@ public sealed partial class GunSystem : SharedGunSystem
         InitializeSpentAmmo();
     }
 
-    private void OnMuzzleFlash(EntityUid uid, GunComponent component, MuzzleFlashEvent args)
+    private void OnMuzzleFlash(MuzzleFlashEvent args)
     {
-        CreateEffect(uid, args);
+        CreateEffect(args.Uid, args);
     }
 
     private void OnHitscan(HitscanEvent ev)

Content.Shared/Weapons/Ranged/Events/MuzzleFlashEvent.cs

@@ -8,10 +8,12 @@ namespace Content.Shared.Weapons.Ranged.Events;
 [Serializable, NetSerializable]
 public sealed class MuzzleFlashEvent : EntityEventArgs
 {
+    public EntityUid Uid;
     public string Prototype;
 
-    public MuzzleFlashEvent(string prototype)
+    public MuzzleFlashEvent(EntityUid uid, string prototype)
     {
+        Uid = uid;
         Prototype = prototype;
     }
 }

Content.Shared/Weapons/Ranged/Systems/SharedGunSystem.cs

@@ -349,7 +349,7 @@ public abstract partial class SharedGunSystem : EntitySystem
         if (sprite == null)
             return;
 
-        var ev = new MuzzleFlashEvent(sprite);
+        var ev = new MuzzleFlashEvent(gun, sprite);
 
         CreateEffect(gun, ev, user);
     }