fix(Core/Spells): Fix spellclick (#8232)

Author: IntelligentQuantum

src/server/game/Handlers/SpellHandler.cpp

@@ -642,6 +642,11 @@ void WorldSession::HandleSpellClick(WorldPacket& recvData)
     if (!unit)
         return;
 
+    if (_player->IsHostileTo(unit))
+    {
+        return;
+    }
+
     // TODO: Unit::SetCharmedBy: 28782 is not in world but 0 is trying to charm it! -> crash
     if (!unit->IsInWorld())
         return;