Maps generated in the Nether or the End do not have a unique texture

Map textures were updated in the latest snapshot; however, there is a design issue with maps created in other dimensions: they lack a unique texture design and use the icon for maps created in the Overworld.

Current behavior:
Maps created in the Nether and End dimensions use the same map design texture as the Overworld.

Expected behavior:
A unique texture for the icons of these maps for the dimensions of the Nether and End.