Core/Spells: Fixed logic related to movement while channeling

Source/Game/Movement/Generators/FleeingGenerator.cs

@@ -40,7 +40,7 @@ namespace Game.Movement
             if (owner.HasUnitState(UnitState.Root | UnitState.Stunned))
                 return;
 
-            if (owner.HasUnitState(UnitState.Casting) && !owner.CanMoveDuringChannel())
+            if (owner.IsMovementPreventedByCasting())
             {
                 owner.CastStop();
                 return;

Source/Game/Movement/Generators/RandomMovement.cs

@@ -86,7 +86,7 @@ namespace Game.Movement
 
         public void _setRandomLocation(T creature)
         {
-            if (creature.HasUnitState(UnitState.Casting) && !creature.CanMoveDuringChannel())
+            if (creature.IsMovementPreventedByCasting())
             {
                 creature.CastStop();
                 return;

Source/Game/Movement/Generators/TargetMovement.cs

@@ -64,7 +64,7 @@ namespace Game.Movement
             }
 
             // prevent movement while casting spells with cast time or channel time
-            if (owner.HasUnitState(UnitState.Casting) && !owner.CanMoveDuringChannel())
+            if (owner.IsMovementPreventedByCasting())
             {
                 if (!owner.isStopped())
                     owner.StopMoving();
@@ -144,7 +144,7 @@ namespace Game.Movement
             if (owner.HasUnitState(UnitState.NotMove))
                 return;
 
-            if (owner.HasUnitState(UnitState.Casting) && !owner.CanMoveDuringChannel())
+            if (owner.IsMovementPreventedByCasting())
                 return;
 
             if (owner.IsTypeId(TypeId.Unit) && !target.isInAccessiblePlaceFor(owner.ToCreature()))