Core/Spells: Replace MovePosition by MovePositionToFirstCollision in spell dest target handling.

- Solves issues such as being able to summon creatures inside terrain/gameobjects, being able to fall through terrain by using Shadowstep/Feral Charge (Cat), and much more
DB/Conditions: Fix startup error added on 018da66
Scripts/SWP: Sathrovarr will no longer cause player teleports on grid load
Core/Misc: Fix crash in ticket creation

Fix a crash happening with malicious CMSG_GMTICKET_CREATE packets.