Fix modsuits and defibs (#93373)

## About The Pull Request

Fixes #93359

Caused by #93165

Inventory screen elements were no longer considered reachable, which
broke mousedrop handing on objects that check "is dragging into
inventory slot"

I don't know the best way to fix this yet but I figured the next best
thing would be to make all of these use the `drag_pickup` element, which
skips this reach-ability check

Thus I refactored it slightly to accommodate for items which should
contextually not be drag-pick-up-abble and bam, works like a charm

## Changelog

🆑 Melbert
fix: Dragging defibs and modsuits off your back works again
/🆑

---------

Co-authored-by: ArcaneMusic <41715314+ArcaneMusic@users.noreply.github.com>
Co-authored-by: Xander3359 <66163761+Xander3359@users.noreply.github.com>

code/modules/modular_computers/computers/item/laptop.dm

@@ -29,6 +29,7 @@
 	if(start_open && !screen_on)
 		toggle_open()
 	RegisterSignal(src, COMSIG_SPEED_POTION_APPLIED, PROC_REF(on_speed_potioned))
+	AddElement(/datum/element/drag_pickup)
 
 /obj/item/modular_computer/laptop/examine(mob/user)
 	. = ..()
@@ -76,16 +77,6 @@
 
 	try_toggle_open(usr)
 
-/obj/item/modular_computer/laptop/mouse_drop_dragged(atom/over_object, mob/user, src_location, over_location, params)
-	if(over_object == user || over_object == src)
-		try_toggle_open(user)
-		return
-	if(istype(over_object, /atom/movable/screen/inventory/hand))
-		var/atom/movable/screen/inventory/hand/H = over_object
-		if(!isturf(loc))
-			return
-		user.put_in_hand(src, H.held_index)
-
 /obj/item/modular_computer/laptop/proc/try_toggle_open(mob/living/user)
 	if(issilicon(user))
 		return