Core/SmartAI: AI change on charmed (#26065)

* Fix AI refresh on charmed

* Remove unnecessary refresh

* Check SMART_EVENT_FLAG_WHILE_CHARMED flag

(cherry picked from commit f6e52f6b3df92a837787f63514417a7d240144cd)

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

@@ -671,7 +671,7 @@ void SmartAI::PassengerBoarded(Unit* who, int8 seatId, bool apply)
     GetScript()->ProcessEventsFor(apply ? SMART_EVENT_PASSENGER_BOARDED : SMART_EVENT_PASSENGER_REMOVED, who, uint32(seatId), 0, apply);
 }
 
-void SmartAI::OnCharmed(bool /*isNew*/)
+void SmartAI::OnCharmed(bool isNew)
 {
     bool const charmed = me->IsCharmed();
     if (charmed) // do this before we change charmed state, as charmed state might prevent these things from processing
@@ -705,6 +705,9 @@ void SmartAI::OnCharmed(bool /*isNew*/)
     }
 
     GetScript()->ProcessEventsFor(SMART_EVENT_CHARMED, nullptr, 0, 0, charmed);
+
+    if (!GetScript()->HasAnyEventWithFlag(SMART_EVENT_FLAG_WHILE_CHARMED)) // we can change AI if there are no events with this flag
+        UnitAI::OnCharmed(isNew);
 }
 
 void SmartAI::DoAction(int32 param)