[UWP] Fix build break problems for some VS users #2965
Merged
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Fixes #2922
Still not entirely sure why this is only broken for some folks. Possibly because we shouldn't have been using the UnionMetadata in the first place, but this seems to work properly.
Specifically, rather than relying on the UnionMetadata winmd, which (I guess?) might vary based on machine state, we explicitly rely on the winmds we require -- the Foundation (for WinRT) and UniversalContract (for XAML) winmds.
Verified by building/running the visualizer
Microsoft Reviewers: Open in CodeFlow