Demotes the "electrical conductivity" flag from flags_1 to obj_flags (#80033)

## About The Pull Request

Code to handle this flag only ever existed on the `/obj` sublevel, so
there's no need for it to be on the `/atom` level `flags_1`. There was
probably a point in time in which mobs or turfs conducted electricity
but there's zero code for it anymore so we truly just live in a society
now.
## Why It's Good For The Game

Frees up a slot on `flags_1` (which is really nice actually), proper
scoping of certain bitflag stuff, etc.
## Changelog
Not relevant to players.

I may have screwed something up, will be doing a few passes on this
myself to ensure all the search and replaces went alright but we should
be good™️

code/game/objects/items/tools/crowbar.dm

@@ -7,7 +7,7 @@
 	lefthand_file = 'icons/mob/inhands/equipment/tools_lefthand.dmi'
 	righthand_file = 'icons/mob/inhands/equipment/tools_righthand.dmi'
 	usesound = 'sound/items/crowbar.ogg'
-	flags_1 = CONDUCT_1
+	obj_flags = CONDUCTS_ELECTRICITY
 	slot_flags = ITEM_SLOT_BELT
 	force = 5
 	throwforce = 7

code/game/objects/items/tools/screwdriver.dm

@@ -8,7 +8,8 @@
 	belt_icon_state = "screwdriver"
 	lefthand_file = 'icons/mob/inhands/equipment/tools_lefthand.dmi'
 	righthand_file = 'icons/mob/inhands/equipment/tools_righthand.dmi'
-	flags_1 = CONDUCT_1 | IS_PLAYER_COLORABLE_1
+	flags_1 = IS_PLAYER_COLORABLE_1
+	obj_flags = CONDUCTS_ELECTRICITY
 	slot_flags = ITEM_SLOT_BELT
 	force = 5
 	demolition_mod = 0.5

code/game/objects/items/tools/spess_knife.dm

@@ -11,7 +11,7 @@
 	lefthand_file = 'icons/mob/inhands/equipment/tools_lefthand.dmi'
 	righthand_file = 'icons/mob/inhands/equipment/tools_righthand.dmi'
 	w_class = WEIGHT_CLASS_TINY
-	flags_1 = CONDUCT_1
+	obj_flags = CONDUCTS_ELECTRICITY
 	slot_flags = ITEM_SLOT_BELT
 	resistance_flags = FIRE_PROOF
 	tool_behaviour = null

code/game/objects/items/tools/weldingtool.dm

@@ -9,7 +9,7 @@
 	worn_icon_state = "welder"
 	lefthand_file = 'icons/mob/inhands/equipment/tools_lefthand.dmi'
 	righthand_file = 'icons/mob/inhands/equipment/tools_righthand.dmi'
-	flags_1 = CONDUCT_1
+	obj_flags = CONDUCTS_ELECTRICITY
 	slot_flags = ITEM_SLOT_BELT
 	force = 3
 	throwforce = 5

code/game/objects/items/tools/wirecutters.dm

@@ -13,7 +13,7 @@
 	greyscale_config_inhand_left = /datum/greyscale_config/wirecutter_inhand_left
 	greyscale_config_inhand_right = /datum/greyscale_config/wirecutter_inhand_right
 
-	flags_1 = CONDUCT_1
+	obj_flags = CONDUCTS_ELECTRICITY
 	slot_flags = ITEM_SLOT_BELT
 	force = 6
 	throw_speed = 3

code/game/objects/items/tools/wrench.dm

@@ -7,7 +7,7 @@
 	worn_icon_state = "wrench"
 	lefthand_file = 'icons/mob/inhands/equipment/tools_lefthand.dmi'
 	righthand_file = 'icons/mob/inhands/equipment/tools_righthand.dmi'
-	flags_1 = CONDUCT_1
+	obj_flags = CONDUCTS_ELECTRICITY
 	slot_flags = ITEM_SLOT_BELT
 	force = 5
 	throwforce = 7