v71.0.28-preview

Changes:

• #2354: Add gaming full-screen experience APIs
• #2295: Document shift-left Win32 metadata annotation proposal
• #2300: Prevent Guid attribute namespace shadowing
• #2287: Upgrade winmd generation to ClangSharp 21
• #2290: Pin GitHub Actions to full-length commit SHAs
• #2280: Missing CanReturnMultipleSuccessValues for IShellLinkA and IShellLinkW for GetPath and GetIDList. Fixed #2279.
• #2289: Bump dotnet-sdk from 8.0.423 to 8.0.424
• #2291: Fix broken PR workflow around API diffs for fork PRs

This list of changes was auto generated.