Improve Rendering position of Features when using 3D

When you are using 3D features in Mapbox Standard based styles and you are using pitch, the rendering of the geojson features sits completely onto of the 3D features, (Deck GL is being added ontop of the layer stack instead of using Standard Slots). This isn't a great experience when viewing the map in 3D.

https://github.com/user-attachments/assets/58928961-14ce-4dc9-92f2-c4f709febfab

Start by reproducing the issue in geojson.io with Mapbox Standard-based styles, 3D features, and map pitch, using the linked recording as a reference. Trace how Deck GL is added to the layer stack and determine how the feature rendering should use Standard Slots; done means GeoJSON features no longer render entirely above the 3D features.

Written by the indexing model from the issue text.