[MIRROR] instrument beacons can fit in pockets [MDB IGNORE] (#22009)

* instrument beacons can fit in pockets (#76230)

## About The Pull Request

This makes instrument delivery beacons fit in pockets.

## Why It's Good For The Game

In a round I had both a door remote and an instrument delivery beacon.
The door remote, however, would fit in my pocket, while the instrument
delivery beacon wouldn't. The door remote seems like a far higher impact
item, so it seemed odd to be that the beacon was balanced to take up
much more inventory, and that they use the same graphic makes this feel
counterintuitive.

## Changelog

🆑
qol: Instrument delivery beacons now fit in pockets.
/🆑

* instrument beacons can fit in pockets

---------

Co-authored-by: YehnBeep <86855173+YehnBeep@users.noreply.github.com>

code/modules/instruments/items.dm

@@ -246,6 +246,7 @@
 	name = "instrument delivery beacon"
 	desc = "Summon your tool of art."
 	icon_state = "gangtool-red"
+	w_class = WEIGHT_CLASS_TINY
 
 /obj/item/choice_beacon/music/generate_display_names()
 	var/static/list/instruments