Fsdk: fix build #1635

Job	Run time
macOS--mono	6m 58s
linux-oldLTS-github--dotnet-and-msbuild	6m 2s
macOS--dotnet6-and-mono	6m 35s
linux-oldLTS-github--dotnet-and-xbuild	5m 45s
linux-newLTS-github--dotnet-and-msbuild	6m 16s
linux-newLTS-github--dotnet-and-xbuild	6m 29s
linux-oldLTS-vanilla--newmono	5m 18s
linux-oldLTS-vanilla--stockmono	4m 36s
linux-newLTS-vanilla--dotnet6	6m 51s
linux-newLTS-vanilla--newmono	5m 15s
linux-newLTS-vanilla--stockmono	4m 13s
windows--legacyFramework	8m 19s
windows--dotnet6	8m 6s
sanity-check	1m 5s
publish	57s
	1h 22m 45s

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