When enabling Terrain, the building-extrusion layer has an height offset that is not removable

mapbox-gl-js version: Latest

browser: Firefox

Steps to Trigger Behavior

1. Set any map configuration, even a custom one
2. Add a build-extrusion layer to display the 3D buildings
3. Minimize the height to 0

Additional note : this is something that I was able to do in Mapbox Studio

Expected Behavior

With or without the terrain enabled, the extruded layer should behave the same way.
The extruded layer should be completely flat due to the height value

Actual Behavior

With no terrain enabled, setting the height to 0 is flattening the layer.
With the terrain enabled, the height is also set to 0 but the layer is still extruded.
Changing the exageration is not changing the extrusion property.

In these pictures, you can see the regular layer in grey and its minimum height in red. The minimum value is not making the extrusion flat...
It also seems like the regular height value is offsetted by the residual extrusion (similar to https://github.com/mapbox/mapbox-gl-js/issues/11983)

Reproduce the issue with terrain enabled and a building-extrusion layer whose height is set to 0, comparing it with the same layer without terrain. Trace the terrain and extrusion rendering paths from the map configuration, then verify that zero height produces a flat layer in both cases.