fixed levitate and parcel walking accuracy

[Zbizu]

Pull Request Prelude

• I have followed proper The Forgotten Server code styling.
• I have read and understood the contribution guidelines before making this PR.
• I am aware that this PR may be closed if the above-mentioned criteria are not fulfilled.

Changes Proposed

• make levitate and parcel behaviour more accurate
• remove floorchange check from levitate, replace checked tilestate to immovableblocksolid

needs testing

expected behaviour:

• POSSIBLE: levitating/parcel walking to tiles blocked by furniture
• POSSIBLE: levitating/parcel walking to tiles like 459
• NOT POSSIBLE: levitating/parcel walking to walls, immovable obstacles or unwalkable grounds
• NOT POSSIBLE levitating/parcel walking to tiles with PVP magic walls

Issues addressed: closes #3680