Fix the exactness of the worldborder system

mods/mcljepc_fakeworldborder/init.lua

@@ -7,8 +7,8 @@ local xmin = mcljepc_mapgen.size * -1
 local old_is_protected = minetest.is_protected
 function minetest.is_protected(pos, name)
 	return old_is_protected(pos, name) or not (
-		    ymin < pos.y and pos.y < ymax
-		and zmin < pos.z and pos.z < zmax
-		and xmin < pos.x and pos.x < xmax
+		    ymin <= pos.y and pos.y <= ymax
+		and zmin <= pos.z and pos.z <= zmax
+		and xmin <= pos.x and pos.x <= xmax
 	)
 end