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

code/modules/power/apc.dm

@@ -135,6 +135,7 @@
 	req_access = list(access_engine_equip)
 	gfi_layer_rotation = GFI_ROTATION_DEFDIR
 	clicksound = /singleton/sound_category/switch_sound
+	obj_flags = OBJ_FLAG_MOVES_UNSUPPORTED
 	var/area/area
 	var/areastring = null
 	var/obj/item/cell/cell

code/modules/power/cable.dm

@@ -29,6 +29,7 @@ By design, d1 is the smallest direction and d2 is the highest
 	desc = "A flexible superconducting cable for heavy-duty power transfer."
 	icon = 'icons/obj/power_cond_white.dmi'
 	icon_state = "0-1"
+	obj_flags = OBJ_FLAG_MOVES_UNSUPPORTED
 	var/d1 = 0
 	var/d2 = 1
 	layer = CABLE_LAYER //Just below unary stuff, which is at 2.45 and above pipes, which are at 2.4

code/modules/power/lights/fixtures.dm

@@ -19,6 +19,7 @@
 	active_power_usage = 20
 	power_channel = LIGHT //Lights are calc'd via area so they dont need to be in the machine list
 	gfi_layer_rotation = GFI_ROTATION_DEFDIR
+	obj_flags = OBJ_FLAG_MOVES_UNSUPPORTED
 	var/brightness_range = 8	// luminosity when on, also used in power calculation
 	var/brightness_power = 0.45
 	var/night_brightness_range = 6