Test cleanup and fixes #1032

Job	Run time
Py3.10 mindeps	4m 59s
Py3.11 mindeps	6m 12s
Py3.12 mindeps	6m 21s
Py3.11 no visualization + coverage	8m 1s
Py3.8 mindeps	3m 30s
Py3.9 noviz	5m 59s
Py3.9 all	6m 22s
Py3.11 dev	8m 44s
Py3.11 viz	6m 48s
Py3.11 all dev	8m 31s
Py3.8 mindeps and CASA	4m 26s
Py3.10 mindeps and CASA	5m 57s
Py3.11, noviz, dev	8m 30s
Py3.8 noviz (except CASA)	3m 59s
Py3.11 noviz (except CASA) MacOS X	4m 9s
Py3.11, noviz Windows	13m 28s
Py3.11, noviz, dev; Windows	13m 49s
Documentation	1m 21s
	2h 1m 6s

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