Schema fixups

[nenorbot]

• show schema maps in sorted key order
• fix schema drill down for non-primitive leaf types

[github-actions[bot]]

Unit Test Results

  1 files  ±0    4 suites  ±0   0s :stopwatch: ±0s 45 tests ±0  45 :heavy_check_mark: ±0  0 :zzz: ±0  0 :x: ±0 

Results for commit 8ddfbaa5. ± Comparison against base commit 8ddfbaa5.