Small console layering fix (#21524)

Makes the consoles compatible to be positioned next to
railings/platforms, and hopefully doesn't break something I didn't
check. I broke this by accident in an earlier away site PR

Fixes #21502

---------

Signed-off-by: Kano <89972582+kano-dot@users.noreply.github.com>

code/modules/modular_computers/computers/subtypes/dev_console.dm

@@ -12,6 +12,7 @@
 	hardware_flag = PROGRAM_CONSOLE
 	anchored = TRUE
 	density = TRUE
+	layer = ABOVE_STRUCTURE_LAYER
 	message_output_range = 1
 	base_idle_power_usage = 100
 	base_active_power_usage = 500
@@ -22,3 +23,8 @@
 	screensaver_light_color = LIGHT_COLOR_WHITE
 	is_holographic = TRUE
 	pass_flags_self = PASSTABLE
+
+/obj/item/modular_computer/console/update_icon()
+	. = ..()
+	if(dir == SOUTH)
+		layer = ABOVE_HUMAN_LAYER