MAINT: have `qn_domains`-keys in Node/EdgeSettings be typed #584

Job	Run time
pytest / Determine job matrix	7s
style / Determine skipped pre-commit hooks	8s
doc / linkcheck / Check external links	1m 17s
doc / nb / Execute and build documentation	57s
style / Run local pre-commit hooks	50s
pytest / Run unit tests (3.10, ubuntu-24.04)	1m 10s
pytest / Run unit tests (3.11, ubuntu-24.04)	1m 9s
pytest / Run unit tests (3.9, ubuntu-24.04)	1m 19s
pytest / Run unit tests (3.12, ubuntu-24.04, qrules)	2m 44s
pytest / Run unit tests (3.9, macos-14)	51s
style / Push changes	0s
doc / Upload to GitHub Pages	0s
	10m 32s

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