Fire MeleeHitEvent on misses. (#12867)

* Fire MeleeHitEvent when there are no targets.

* Prevent certain weapons from activating if they had no hit entities on hit.

* Prevent miss events from firing when target is yourself or was deleted.

* Use .Value as Target is already known not to be null.

* uid changes

---------

Co-authored-by: metalgearsloth <comedian_vs_clown@hotmail.com>

Content.Shared/Damage/Systems/StaminaSystem.cs

@@ -1,3 +1,4 @@
+using System.Linq;
 using Content.Shared.Administration.Logs;
 using Content.Shared.Alert;
 using Content.Shared.CombatMode;
@@ -139,10 +140,12 @@ public sealed class StaminaSystem : EntitySystem
 
     private void OnHit(EntityUid uid, StaminaDamageOnHitComponent component, MeleeHitEvent args)
     {
-        if (!args.IsHit)
+        if (!args.IsHit ||
+            !args.HitEntities.Any() ||
+            component.Damage <= 0f)
+        {
             return;
-
-        if (component.Damage <= 0f) return;
+        }
 
         var ev = new StaminaDamageOnHitAttemptEvent();
         RaiseLocalEvent(uid, ref ev);