Terrain: drape map aligned circles

Nobody has claimed this yet.

Similarly to #10365 , we could drape circles that are map aligned (circle-pitch-alignment and circle-pitch-scale == 'map').

With terrain and set `Map.optimizeForTerrain` (set by default) the map will render for performance priority, which may lead to layer reordering allowing to maximize performance (layers that are draped over terrain will be drawn first, including fill, line, background, hillshade and raster). Any circles will be rendered later, with symbols. Supporting draping for map aligned circles, in addition to immediate render, would allow them to be rendered in proper order, regardless if they are within draped or non draped batch of layers.

Start by reviewing issue #10365 and the terrain rendering and layer-ordering behavior described here. Determine how map-aligned circles are currently rendered relative to draped layers and symbols; done means supporting their draping while retaining immediate rendering and correct ordering with terrain optimization enabled.

Written by the indexing model from the issue text.