Stops shuttles from bringing background turfs with them. (#15580)

code/modules/overmap/exoplanets/turfs.dm

@@ -4,6 +4,7 @@
 	icon_state = "desert"
 	has_resources = 1
 	footstep_sound = /singleton/sound_category/asteroid_footstep
+	turf_flags = TURF_FLAG_BACKGROUND
 	var/diggable = 1
 	var/dirt_color = "#7c5e42"
 	var/has_edge_icon = TRUE

code/modules/overmap/overmap_shuttle.dm

@@ -114,6 +114,7 @@
 	icon_state = "fuel_port"
 	density = 0
 	anchored = 1
+	obj_flags = OBJ_FLAG_MOVES_UNSUPPORTED
 	var/icon_closed = "fuel_port"
 	var/icon_empty = "fuel_port_empty"
 	var/icon_full = "fuel_port_full"