* upstream/master: (47 commits)
  Make compiler server logging explicit (dotnet#48557)
  [master] Update dependencies from dotnet/arcade (dotnet#48274)
  Handle removed project in ExternalErrorDiagnosticUpdateSource
  Report an error for ref-returning auto-properties declared in an interface. (dotnet#49510)
  Add usings on paste (dotnet#48501)
  Determinism test needs to use bootstrap compiler (dotnet#49483)
  Simplify and reduce amount of work performed by SourcePropertySymbolBase constructor. (dotnet#49360)
  Updates test
  Simplify
  Split Document/Workspace handler into only handling open/closed documents respectively.
  only report watson once.
  Additional usage of a PooledHashset. (dotnet#49459)
  Loc checkin
  Update src/Features/CSharp/Portable/CodeRefactorings/ConvertLocalFunctionToMethod/CSharpConvertLocalFunctionToMethodCodeRefactoringProvider.cs
  Preserve annotation on comment trivia when performing formatting.
  Validate arguments to IAsyncCompletionSource methods
  Determinism fixes for AnonymousTypes in VB (dotnet#49467)
  Collect nfw information for a crash we're seeing.
  Make sure to not discard text changes when no reference changes are present
  Create an unsafe method from a local function when necessary (dotnet#49389)
  ...