Updates the proximity monitor component (#15836)

* prox component update

* mochi review

* bug fix, makes proximity sensors always active

* GC fixes and removes an unused proc

* Disposal fixes from TM

* fixes runtimes when objects created in nullspace runtimes, fixes portable flasher

* a fresh perspective

* lewcc review

* adds comment about direct loc setting over forceMove

code/game/objects/items/devices/transfer_valve.dm

@@ -62,8 +62,6 @@
 		to_chat(user, "<span class='notice'>You attach [A] to the valve controls and secure it.</span>")
 		A.holder = src
 		A.toggle_secure()	//this calls update_icon(), which calls update_icon() on the holder (i.e. the bomb).
-		if(istype(attached_device, /obj/item/assembly/prox_sensor))
-			AddComponent(/datum/component/proximity_monitor)
 
 		investigate_log("[key_name(user)] attached a [A] to a transfer valve.", INVESTIGATE_BOMB)
 		add_attack_logs(user, src, "attached [A] to a transfer valve", ATKLOG_FEW)
@@ -139,7 +137,6 @@
 				attached_device.forceMove(get_turf(src))
 				attached_device.holder = null
 				attached_device = null
-				qdel(GetComponent(/datum/component/proximity_monitor))
 				update_icon()
 		else
 			. = FALSE

code/game/objects/items/weapons/grenades/chem_grenade.dm

@@ -176,7 +176,7 @@
 			if(I.reagents.total_volume)
 				to_chat(user, "<span class='notice'>You add [I] to the assembly.</span>")
 				user.drop_item()
-				I.loc = src
+				I.forceMove(src)
 				beakers += I
 			else
 				to_chat(user, "<span class='notice'>[I] is empty.</span>")
@@ -190,10 +190,8 @@
 
 		user.drop_item()
 		nadeassembly = A
-		if(nadeassembly.has_prox_sensors())
-			AddComponent(/datum/component/proximity_monitor)
 		A.master = src
-		A.loc = src
+		A.forceMove(src)
 		assemblyattacher = user.ckey
 		stage = WIRED
 		to_chat(user, "<span class='notice'>You add [A] to [src]!</span>")
@@ -218,13 +216,12 @@
 		payload_name = null
 		label = null
 		if(nadeassembly)
-			nadeassembly.loc = get_turf(src)
+			nadeassembly.forceMove(get_turf(src))
 			nadeassembly.master = null
 			nadeassembly = null
-			qdel(GetComponent(/datum/component/proximity_monitor))
 		if(beakers.len)
 			for(var/obj/O in beakers)
-				O.loc = get_turf(src)
+				O.forceMove(get_turf(src))
 			beakers = list()
 		update_icon()
 
@@ -307,8 +304,6 @@
 /obj/item/grenade/chem_grenade/proc/CreateDefaultTrigger(typekey)
 	if(ispath(typekey,/obj/item/assembly))
 		nadeassembly = new(src)
-		if(nadeassembly.has_prox_sensors())
-			AddComponent(/datum/component/proximity_monitor)
 		nadeassembly.a_left = new /obj/item/assembly/igniter(nadeassembly)
 		nadeassembly.a_left.holder = nadeassembly
 		nadeassembly.a_left.secured = 1