Fixes runtimes caused by get_atom_on_turf and reverts an unintentional balance change to stabilized crossbreeds (#90500)

get_atom_on_turf would return the last movable in chain, even if it was
passed a type, which is not the behavior most people would expect and
thus had led to errors in multiple other segments of code. Additionally,
regardless of their storage depth which was an intentional limiter -
this restores said behavior.

- Closes #90498
- Closes #90497

Runtimes bad, and so are unintentional change to game's balance.

🆑
fix: Fixed runtimes caused by stabilized crossbreeds
fix: Fixed an unintentional buff to stabilized crossbreeds, they now
once again need to be put in your backpack or pockets.
/🆑

code/modules/mapfluff/ruins/spaceruin_code/hilbertshotel.dm

@@ -126,7 +126,7 @@ GLOBAL_VAR_INIT(hhMysteryRoomNumber, rand(1, 999999))
 		to_chat(target, span_warning("You aren't able to activate \the [src] anymore!"))
 
 	// Has the user thrown it away or otherwise disposed of it such that it's no longer in their hands or in some storage connected to them?
-	// if(!(get_atom_on_turf(src, /mob) == user)) SKYRAT EDIT ORIGINAL
+	// if(get_atom_on_turf(src, /mob) != user) SKYRAT EDIT ORIGINAL
 	if(!Adjacent(user)) // SKYRAT EDIT -- Ghost Cafe Static Hilbertspawner
 		if(user == target)
 			to_chat(user, span_warning("\The [src] is no longer in your possession!"))