Catwalk block uplifting from below. Base for similar Z move blocking things. (#52141)

* BLOCK_Z_FALL separate

Separate BLOCK_Z_FALL flag to BLOCK_Z_OUT_DOWN, BLOCK_Z_OUT_UP, BLOCK_Z_IN_DOWN, BLOCK_Z_IN_UP

* Propertly Z blocking for catwalk

Catwalk block z falling and uplifting from below

* Walkable lattice

Now lattice can support spaceman

* Replace BLOCK_Z_FALL flag

* Update _open.dm

* Update openspace.dm

* Update ladders.dm

* Update away_props.dm

code/game/objects/structures/ladders.dm

@@ -7,6 +7,7 @@
 	anchored = TRUE
 	var/obj/structure/ladder/down   //the ladder below this one
 	var/obj/structure/ladder/up     //the ladder above this one
+	obj_flags = CAN_BE_HIT | BLOCK_Z_OUT_DOWN
 
 /obj/structure/ladder/Initialize(mapload, obj/structure/ladder/up, obj/structure/ladder/down)
 	..()

code/game/objects/structures/lattice.dm

@@ -17,6 +17,7 @@
 	/obj/structure/falsewall)
 	smooth = SMOOTH_MORE
 	//	flags = CONDUCT_1
+	obj_flags = CAN_BE_HIT | BLOCK_Z_OUT_DOWN
 
 /obj/structure/lattice/examine(mob/user)
 	. = ..()
@@ -77,7 +78,7 @@
 	number_of_mats = 2
 	smooth = SMOOTH_TRUE
 	canSmoothWith = null
-	obj_flags = CAN_BE_HIT | BLOCK_Z_FALL
+	obj_flags = CAN_BE_HIT | BLOCK_Z_OUT_DOWN | BLOCK_Z_IN_UP
 
 /obj/structure/lattice/catwalk/deconstruction_hints(mob/user)
 	return "<span class='notice'>The supporting rods look like they could be <b>cut</b>.</span>"
@@ -103,7 +104,7 @@
 	color = "#5286b9ff"
 	smooth = SMOOTH_TRUE
 	canSmoothWith = null
-	obj_flags = CAN_BE_HIT | BLOCK_Z_FALL
+	obj_flags = CAN_BE_HIT | BLOCK_Z_OUT_DOWN | BLOCK_Z_IN_UP
 	resistance_flags = FIRE_PROOF | LAVA_PROOF
 
 /obj/structure/lattice/lava/deconstruction_hints(mob/user)