Mineshaft type is still called "mesa"

Can confirm in 1.18.1.

Here's a code analysis of this issue.

Code Analysis:

The following is based on a decompiled version of Minecraft 1.18.1 using MCP-Reborn.

net.minecraft.data.worldgen.StructureFeatures.java

public class StructureFeatures {
   ...
   private static final ConfiguredStructureFeature<MineshaftConfiguration, ? extends StructureFeature<MineshaftConfiguration>> MINESHAFT_MESA = register("mineshaft_mesa", StructureFeature.MINESHAFT.configured(new MineshaftConfiguration(0.004F, MineshaftFeature.Type.MESA)));
   ...

If we look at the above class, we can see that badlands mineshaft types are still called/referred to as "MESA", therefore introducing an inconsistency, since the "mesa" biome was renamed to "badlands" biome in 1.13, so it would be expected that mineshafts types follow this same concept.