* fixes SM crystals dusting themselves after falling (#77128)
## About The Pull Request
get_z_move_affected always returns src which is something that wasnt
exactly accounted in this case
## Why It's Good For The Game
fixes#76811
## Changelog
🆑
fix: shoving a crystal down a hole no longer makes it dust itself
/🆑
* fixes SM crystals dusting themselves after falling
---------
Co-authored-by: jimmyl <70376633+mc-oofert@users.noreply.github.com>
841f3596b8