* upstream/master: (304 commits)
  Tweak diagnostics to account for records (dotnet#46341)
  Diagnose precedence inversion in a warning wave (dotnet#46239)
  Remove PROTOTYPE tag (dotnet#45965)
  Only run a single pass of NullableWalker per-member (dotnet#46402)
  Fix crash, and offer "declare as nullable" for tuple fields (dotnet#46437)
  Simplify contract for RunWithShutdownBlockAsync
  Fix optprof plugin input
  check if EditorAdaptersFactoryService gives us a null buffer
  Cannot assign maybe-null value to TNotNull variable (dotnet#41445)
  Fix overload resolution to handle binary compat in the face of covariant returns (dotnet#46367)
  Same failure on Linux
  Skip some tests on Mac
  Added search option for inline parameter name hints
  Spelling
  tweak docs
  Improve comment
  Improve the "not exhaustive" diagnostic in the presence of a when clause. (dotnet#46143)
  PR feedback
  Use record keyword to display records (dotnet#46338)
  remove test that aserts .NET Standard should be prefered over .NET Framework
  ...