Core/AI: Fix remaining charming issue

Make creatures evade when a charming expires and they cannot attack the charmer (i.e. charmer with .gm on)

(cherry picked from commit 69809d12031d055d8d0cffb5a187d9af09dd0efe)

src/server/game/AI/CreatureAI.cpp

@@ -70,6 +70,9 @@ void CreatureAI::OnCharmed(bool isNew)
         }
 
         me->LastCharmerGUID.Clear();
+
+        if (!me->IsInCombat())
+            EnterEvadeMode(EVADE_REASON_NO_HOSTILES);
     }
 
     UnitAI::OnCharmed(isNew);

src/server/game/AI/SmartScripts/SmartAI.cpp

@@ -708,6 +708,9 @@ void SmartAI::OnCharmed(bool /*isNew*/)
                 if (Unit* lastCharmer = ObjectAccessor::GetUnit(*me, me->LastCharmerGUID))
                     me->EngageWithTarget(lastCharmer);
             me->LastCharmerGUID.Clear();
+
+            if (!me->IsInCombat())
+                EnterEvadeMode(EVADE_REASON_NO_HOSTILES);
         }
     }