(feature) Add Stage Manager (com.apple.WindowManager) settings #1488

Job	Run time
install-flake-against-unstable	3m 7s
install-against-unstable	4m 57s
install-against-stable	4m 35s
install-flake-against-stable	4m 5s
test-stable	31s
test-unstable	10m 23s
	27m 38s

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