Set the application's dark mode to follow the app settings on macOS. … #6965

Job	Run time
Lint	2m 27s
macOS-Build (x86_64, x86_64-apple-darwin)	22m 7s
Linux-Build (x64, amd64, x86_64-unknown-linux-gnu)	14m 20s
Windows-Build (x64, x86_64-pc-windows-msvc)	17m 42s
macOS-Build (arm64, aarch64-apple-darwin)	6m 37s
Linux-Build (arm64, arm64, aarch64-unknown-linux-gnu, aarch64-linux-gnu-)	13m 36s
Windows-Build (arm64, aarch64-pc-windows-msvc)	16m 10s
Linux-Build (arm, armhf, arm-unknown-linux-gnueabihf, arm-linux-gnueabihf-)	11m 38s
	1h 44m 37s

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