File Scoped Namespaces Break CodeLens

[JohnCampionJr]

Issue Description

In files with File-scoped namespaces, the CodeLens feature is broken

Steps to Reproduce

Change a file to file-scoped namespace from block

Expected Behavior

No change to CodeLens

Actual Behavior

CodeLens disappears

Logs

OmniSharp log

No errors reported

C# log

Nothing

Environment information

VSCode version: 1.60.0
C# Extension: 1.23.15

Dotnet Information

.NET SDK (reflecting any global.json): Version: 6.0.100-preview.7.21379.14 Commit: 22d70b47bc

Runtime Environment:
OS Name: Windows
OS Version: 10.0.22000
OS Platform: Windows
RID: win10-x64
Base Path: C:\Program Files\dotnet\sdk\6.0.100-preview.7.21379.14\

Host (useful for support):
Version: 6.0.0-preview.7.21377.19
Commit: 91ba01788d

.NET SDKs installed:
5.0.400 [C:\Program Files\dotnet\sdk]
6.0.100-preview.7.21379.14 [C:\Program Files\dotnet\sdk]

.NET runtimes installed:
Microsoft.AspNetCore.All 2.1.29 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.App 2.1.29 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 3.1.18 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 5.0.9 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 6.0.0-preview.7.21378.6 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 2.1.29 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 3.1.18 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 5.0.9 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 6.0.0-preview.7.21377.19 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 3.1.18 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 5.0.9 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 6.0.0-preview.7.21378.9 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

To install additional .NET runtimes or SDKs:
https://aka.ms/dotnet-download

Visual Studio Code Extensions

Extension	Author	Version
csharp	ms-dotnettools	1.23.15
dotnet-test-explorer	formulahendry	0.7.6
EditorConfig	EditorConfig	0.16.4
msbuild-project-tools	tintoy	0.3.15
volar	johnsoncodehk	0.27.15
vscode-icons	vscode-icons-team	11.6.0

[filipw]

This was already fixed in OmniSharp/omnisharp-roslyn#2226