MSC3967: Do not require UIA when first uploading cross signing keys #107

Job	Run time
Build for Linux (linux, amd64)	1m 43s
Linting	1m 48s
Build for Linux (linux, 386)	1m 36s
Unit tests	2m 42s
Build for Windows (windows, amd64)	2m 17s
WASM build test	0s
Initial tests passed	1s
Sytest (${{ matrix.label }})	0s
Upgrade tests from HEAD-2	0s
Integration tests	0s
Upgrade tests	0s
Complement (${{ matrix.label }})	0s
Integration tests passed	3s
Update Docker images	0s
	10m 10s

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