Ancient cities' walls template pool is missing a template

The vanilla worldgen's template pool 'ancient_city/walls,json' does not include the following template, which is included in the template pool 'ancient_city/walls/no_corners.json':

minecraft:ancient_city/walls/intact_horizontal_wall_bridge

This may be intended; but the name of the pool implies that it's supposed to include all walls, and if that's the case, this one should be included.