vscode-vim and omnisharp freezes because of enableImportCompletion

Steps to reproduce

1. in settings.json enable import completion

omnisharp.enableImportCompletion: true

Expected behavior

I should be able to keep typing while omnisharp resolves intellisense with vscode vim.

Actual behavior

Omnisharp freezes until it resolves intellisense with vscode vim.

Additional context

vscode-vim and omnisharp clashes when you set omnisharp.enableImportCompletion: true. This did not exist before but now i have this issue.

Environment data

dotnet --info output:

.NET SDK (reflecting any global.json):
 Version:   6.0.301
 Commit:    43f9b18481

Runtime Environment:
 OS Name:     ubuntu
 OS Version:  20.04
 OS Platform: Linux
 RID:         ubuntu.20.04-x64
 Base Path:   /usr/share/dotnet/sdk/6.0.301/

Host (useful for support):
  Version: 6.0.6
  Commit:  7cca709db2

.NET SDKs installed:
  3.1.420 [/usr/share/dotnet/sdk]
  5.0.408 [/usr/share/dotnet/sdk]
  6.0.301 [/usr/share/dotnet/sdk]

.NET runtimes installed:
  Microsoft.AspNetCore.App 3.1.26 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 5.0.17 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 6.0.6 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 3.1.26 [/usr/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 5.0.17 [/usr/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 6.0.6 [/usr/share/dotnet/shared/Microsoft.NETCore.App]

VS Code version:

1.68.1
30d9c6cd9483b2cc586687151bcbcd635f373630
x64

C# Extension version: v1.25.0
Vscodevim version: v1.23.0

OmniSharp log

[warn]: OmniSharp.Roslyn.CSharp.Services.Navigation.FindUsagesService
        No symbol found. File: /home/kubilay/Documents/dotnet-tutorials/jwt-new/AuthServer.Core/Entities/AppUser.cs, Line: 2, Column: 26.
[warn]: OmniSharp.Roslyn.CSharp.Services.Navigation.FindUsagesService
        No symbol found. File: /home/kubilay/Documents/dotnet-tutorials/jwt-new/AuthServer.Core/Entities/AppUser.cs, Line: 2, Column: 27.
Received response for /findusages but could not find request.
[warn]: OmniSharp.Roslyn.CSharp.Services.Navigation.FindUsagesService
        No symbol found. File: /home/kubilay/Documents/dotnet-tutorials/jwt-new/AuthServer.Core/Entities/AppUser.cs, Line: 2, Column: 28.
Received response for /findusages but could not find request.
[warn]: OmniSharp.Roslyn.CSharp.Services.Navigation.FindUsagesService
        No symbol found. File: /home/kubilay/Documents/dotnet-tutorials/jwt-new/AuthServer.Core/Entities/AppUser.cs, Line: 2, Column: 29.
Received response for /findusages but could not find request.
[warn]: OmniSharp.Roslyn.CSharp.Services.Navigation.FindUsagesService
        No symbol found. File: /home/kubilay/Documents/dotnet-tutorials/jwt-new/AuthServer.Core/Entities/AppUser.cs, Line: 2, Column: 30.
Received response for /findusages but could not find request.
[warn]: OmniSharp.Roslyn.CSharp.Services.Navigation.FindUsagesService
        No symbol found. File: /home/kubilay/Documents/dotnet-tutorials/jwt-new/AuthServer.Core/Entities/AppUser.cs, Line: 2, Column: 31.
Received response for /findusages but could not find request.
[warn]: OmniSharp.Roslyn.CSharp.Services.Navigation.FindUsagesService
        No symbol found. File: /home/kubilay/Documents/dotnet-tutorials/jwt-new/AuthServer.Core/Entities/AppUser.cs, Line: 2, Column: 32.
Received response for /findusages but could not find request.
[warn]: OmniSharp.Roslyn.CSharp.Services.Navigation.FindUsagesService
        No symbol found. File: /home/kubilay/Documents/dotnet-tutorials/jwt-new/AuthServer.Core/Entities/AppUser.cs, Line: 2, Column: 33.
Received response for /findusages but could not find request.
[warn]: OmniSharp.Roslyn.CSharp.Services.Navigation.FindUsagesService
        No symbol found. File: /home/kubilay/Documents/dotnet-tutorials/jwt-new/AuthServer.Core/Entities/AppUser.cs, Line: 2, Column: 34.
Received response for /findusages but could not find request.
[warn]: OmniSharp.Roslyn.CSharp.Services.Navigation.FindUsagesService
        No symbol found. File: /home/kubilay/Documents/dotnet-tutorials/jwt-new/AuthServer.Core/Entities/AppUser.cs, Line: 2, Column: 35.
Received response for /findusages but could not find request.
[warn]: OmniSharp.Roslyn.CSharp.Services.Navigation.FindUsagesService
        No symbol found. File: /home/kubilay/Documents/dotnet-tutorials/jwt-new/AuthServer.Core/Entities/AppUser.cs, Line: 2, Column: 36.
Received response for /findusages but could not find request.
[warn]: OmniSharp.Roslyn.CSharp.Services.Navigation.FindUsagesService
        No symbol found. File: /home/kubilay/Documents/dotnet-tutorials/jwt-new/AuthServer.Core/Entities/AppUser.cs, Line: 2, Column: 37.

Start by reproducing the freeze with vscode-vim, OmniSharp, and omnisharp.enableImportCompletion set to true using the reported versions and environment. Inspect the interaction between completion handling and Vim input, using the supplied OmniSharp log as a symptom; done means typing remains responsive while import completion resolves.