Fix constructed directional windows leaking atmos, wrap setting of the anchored var on objects (#38934)

* Wrap setting anchored for structures, fix atmos bug

* forgot this

* Add a signal for setanchored

* move setanchored to obj

* machinery, also some structure stuff

* tabbing

code/game/objects/structures/windoor_assembly.dm

@@ -121,7 +121,7 @@
 							to_chat(user, "<span class='warning'>There is already a windoor in that location!</span>")
 							return
 					to_chat(user, "<span class='notice'>You secure the windoor assembly.</span>")
-					anchored = TRUE
+					setAnchored(TRUE)
 					if(secure)
 						name = "secure anchored windoor assembly"
 					else
@@ -136,7 +136,7 @@
 					if(!anchored)
 						return
 					to_chat(user, "<span class='notice'>You unsecure the windoor assembly.</span>")
-					anchored = FALSE
+					setAnchored(FALSE)
 					if(secure)
 						name = "secure windoor assembly"
 					else