AddReturnType refactoring occasionally throws #16844
Description
I cannot come up with a definitive repo but this sometimes happens when I just copy a file in the solution explorer.
Here is the stack trace:
System.Exception : The file 'C:\code\fsharp3\tests\benchmarks\FCSBenchmarks\CompilerServiceBenchmarks\GraphTypeCheckingBenchmarks - Copy.fs' was not part of the project. Did you call InvalidateConfiguration when the list of files in the project changed?
at FSharp.Compiler.CodeAnalysis.IncrementalBuilder.GetSlotOfFileName(String fileName)
at <StartupCode$FSharp-Compiler-Service>.$BackgroundCompiler.ParseAndCheckFileInProject@919-3.Invoke(FSharpOption`1 cachedResults)
at FSharp.Compiler.BuildGraph.Bind@63-1.Invoke(T x)
at Microsoft.FSharp.Control.AsyncPrimitives.CallThenInvokeNoHijackCheck[a,b](AsyncActivation`1 ctxt,b result1,FSharpFunc`2 userCode)
at Microsoft.FSharp.Control.Trampoline.Execute(FSharpFunc`2 firstAction)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at async Microsoft.VisualStudio.FSharp.Editor.WorkspaceExtensions.CheckerExtensions.FSharpChecker-ParseAndCheckDocumentWithPossibleStaleResults@388-3(<Unknown Parameters>)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at async Microsoft.VisualStudio.FSharp.Editor.WorkspaceExtensions.CheckerExtensions.FSharpChecker-ParseAndCheckDocumentWithPossibleStaleResults@378(<Unknown Parameters>)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at async Microsoft.VisualStudio.FSharp.Editor.WorkspaceExtensions.CheckerExtensions.FSharpChecker-ParseAndCheckDocument@449(<Unknown Parameters>)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at async Microsoft.VisualStudio.FSharp.Editor.WorkspaceExtensions.Document-GetFSharpParseAndCheckResultsAsync@539(<Unknown Parameters>)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at async StartupCode$FSharp-Editor(<Unknown Parameters>)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at async Microsoft.CodeAnalysis.CodeRefactorings.CodeRefactoringService.<>c__DisplayClass12_0.<GetRefactoringFromProviderAsync>b__0(<Unknown Parameters>)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at async Microsoft.CodeAnalysis.Extensions.IExtensionManagerExtensions.PerformFunctionAsync[T](<Unknown Parameters>)