Fix gun cycling ammo count update (#25635)

Doesn't update correctly when cycling.

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

@@ -112,7 +112,10 @@ public abstract partial class SharedGunSystem
             }
         }
 
-        CycleCartridge(uid, component, user);
+        if (!CycleCartridge(uid, component, user))
+        {
+            UpdateAmmoCount(uid);
+        }
 
         if (component.BoltClosed != false)
         {
@@ -202,11 +205,12 @@ public abstract partial class SharedGunSystem
     /// <summary>
     /// Tries to take ammo from the magazine and insert into the chamber.
     /// </summary>
-    private void CycleCartridge(EntityUid uid, ChamberMagazineAmmoProviderComponent component, EntityUid? user = null, AppearanceComponent? appearance = null)
+    private bool CycleCartridge(EntityUid uid, ChamberMagazineAmmoProviderComponent component, EntityUid? user = null, AppearanceComponent? appearance = null)
     {
         // Try to put a new round in if possible.
         var magEnt = GetMagazineEntity(uid);
         var chambered = GetChamberEntity(uid);
+        var result = false;
 
         // Similar to what takeammo does though that uses an optimised version where
         // multiple bullets may be fired in a single tick.
@@ -243,7 +247,11 @@ public abstract partial class SharedGunSystem
             {
                 UpdateAmmoCount(uid);
             }
+
+            result = true;
         }
+
+        return result;
     }
 
     /// <summary>