Intercomms, widebands, and headets defaults to on again. Handhelds co…

…ntinue to default to off. (#2924)

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## About The Pull Request

This turns Intercomms, widebands, and headsets defaults to on again.
HANDHELDS REMAIN OFF!

## Why It's Good For The Game

Wideband doesn't record if listening is not on. Intercomms are basically
useless now unless you run around the ship turning them on. Headsets
don't have a listening range, so these shouldn't default to off either.

Fixes #2923

## Changelog

:cl:
tweak: intercomms, widebands, and headsets default speaker on again.
Handhelds remain off by default.
/:cl:

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code/game/objects/items/devices/radio/headset.dm

@@ -22,6 +22,7 @@ GLOBAL_LIST_INIT(channel_tokens, list(
 	custom_materials = list(/datum/material/iron=75)
 	subspace_transmission = TRUE
 	headset = TRUE
+	listening = TRUE
 	canhear_range = 0 // can't hear headsets from very far away
 
 	slot_flags = ITEM_SLOT_EARS

code/game/objects/items/devices/radio/intercom.dm

@@ -4,6 +4,7 @@
 	icon = 'icons/obj/radio.dmi'
 	icon_state = "intercom"
 	anchored = TRUE
+	listening = TRUE
 	w_class = WEIGHT_CLASS_BULKY
 	canhear_range = 2
 	dog_fashion = null