Core/Spells: Fix orientation- and targeting-related issues if the creature isn't currently engaged in combat. (#17120)

Also disable spell focus system for vehicle control auras.

Closes #16572
Closes #17016

src/server/scripts/Northrend/zone_dalaran.cpp

@@ -115,7 +115,6 @@ public:
                     }
                     break;
             }
-            me->SetOrientation(me->GetHomePosition().GetOrientation());
             return;
         }