Core/Spells: Remade trajectory target selection

Port From (https://github.com/TrinityCore/TrinityCore/commit/3f7fe6f8a51f61083b4940eaadddc3b390f8e238)

Source/Game/Handlers/SpellHandler.cs

@@ -569,6 +569,9 @@ namespace Game
             pos.Relocate(packet.CollisionPos);
             spell.m_targets.ModDst(pos);
 
+            // we changed dest, recalculate flight time
+            spell.RecalculateDelayMomentForDst();
+
             NotifyMissileTrajectoryCollision data = new NotifyMissileTrajectoryCollision();
             data.Caster = packet.Target;
             data.CastID = packet.CastID;