Don't allow disabling SVS from substates #472

Job	Run time
build-windows	6h 0m 3s
wheel-*nix (ubuntu-20.04)	10m 19s
build-*nix (ubuntu-24.04)	6h 0m 13s
wheel-*nix (macos-12)	5m 37s
build-*nix (macos-12)	6h 0m 16s
wheel-*nix (macos-latest)	2m 33s
wheel-*nix (windows-latest)	7m 25s
build-*nix (macos-latest)	6h 0m 15s
Test wheel on all python versions	0s
Publish to pypi.org	0s
Publish to test.pypi.org	0s
	1d 0h 26m 41s

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