Adapt blocking height of TS walls etc.

to WDist rescaling.

Also, make wall hit-shape height match blocking height and tweak it to
approximate original TS behaviour as much as possible (Tick Tanks could
shoot over them, but only from certain angles/distances).

mods/ts/rules/defaults.yaml

@@ -287,7 +287,7 @@
 			LocalYaw: 128
 			TopLeft: -512, -512
 			BottomRight: 512, 512
-			VerticalTopOffset: 512
+			VerticalTopOffset: 768
 
 ^BuildingPlug:
 	AlwaysVisible:
@@ -903,7 +903,7 @@
 			LocalYaw: 128
 			TopLeft: -512, -512
 			BottomRight: 512, 512
-			VerticalTopOffset: 640
+			VerticalTopOffset: 768
 	Armor:
 		Type: Heavy
 	LineBuildNode:
@@ -922,7 +922,7 @@
 		OpeningSound: gateup1.aud
 		ClosingSound: gatedwn1.aud
 		TerrainTypes: Clear, Rough, Road, DirtRoad, Green, Sand, Pavement
-		BlocksProjectilesHeight: 640
+		BlocksProjectilesHeight: 768
 	Buildable:
 		Description: Automated barrier that opens for allied units.