Sort nodes in circtree before descending for distance calculation

[pramsey]

As discovered in working on trying to get performant edge trees in planar space, there is a potentially very large speedup available in doing a tree-based distance calculation in sorting the tree nodes before descending into them, since doing so increases the odds of getting min/max constraints that will prune dead branches in later descents.

Applying the same idea to the CIRC_NODE trees used in geography calculations, a speed-up of 3x for a query of all countries against Canada was observed.

[pramsey]

In 16371:

Apply node sorting before descent to CIRC_NODE trees for
faster calculation of geography distances.
Closes #4010