MAINT: have `qn_domains`-keys in Node/EdgeSettings be typed #570

Job	Run time
style / Determine skipped pre-commit hooks	8s
pytest / Determine job matrix	4s
doc / linkcheck / Check external links	47s
doc / nb / Execute and build documentation	50s
pytest / Run unit tests (3.10, ubuntu-24.04)	1m 23s
pytest / Run unit tests (3.11, ubuntu-24.04)	1m 8s
pytest / Run unit tests (3.9, ubuntu-24.04)	1m 21s
pytest / Run unit tests (3.12, ubuntu-24.04, qrules)	4m 37s
pytest / Run unit tests (3.9, macos-14)	1m 8s
style / Run local pre-commit hooks	42s
style / Run taplo through pre-commit	0s
doc / Upload to GitHub Pages	0s
style / Push changes	0s
	12m 8s

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