'Select PSScriptAnalyzer rules' command broke starting with preview extension 2019.11.0

Using 2020.1.0 but I have seen it before the recent update. Going back to previous release, I found that 2019.9.0 was the last version where it still worked therefore it something in between 2019.9.0 and 2019.11.0 ,which is likely going to be the omnisharp refactoring @TylerLeonhardt

System Details Output

### VSCode version: 1.42.0-insider 33c79d5ad447956814a2a3658029dffb9e28bae6 x64

### VSCode extensions:
DavidAnson.vscode-markdownlint@0.33.0
eamodio.gitlens@10.2.0
mauve.terraform@1.4.0
ms-azure-devops.azure-pipelines@1.157.4
ms-azuretools.vscode-azureappservice@0.16.2
ms-azuretools.vscode-azurefunctions@0.20.1
ms-azuretools.vscode-azurestorage@0.7.2
ms-azuretools.vscode-azureterraform@0.3.0
ms-azuretools.vscode-docker@0.9.0
ms-python.python@2020.1.58038
ms-vscode-remote.remote-containers@0.97.0
ms-vscode-remote.remote-wsl@0.42.1
ms-vscode.azure-account@0.8.8
ms-vscode.csharp@1.21.9
ms-vscode.powershell@2020.1.0
ms-vscode.powershell-preview@2020.1.0
ms-vsonline.vsonline@1.0.1424
msazurermtools.azurerm-vscode-tools@0.8.3
samcogan.arm-snippets@1.4.19


### PSES version:

### PowerShell version:

Name                           Value
----                           -----
PSVersion                      7.0.0-rc.1
PSEdition                      Core
GitCommitId                    7.0.0-rc.1
OS                             Microsoft Windows 10.0.18362
Platform                       Win32NT
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0

Issue Description

Open a PowerShell file to start the extension.
When selecting the 'Select PSScriptAnalyzer rules' nothing happens

Expected Behaviour

A dropdown menu of PSSA rules should come up.

Actual Behaviour

Nothing happens

Riproduci il malfunzionamento aprendo un file PowerShell ed eseguendo “Select PSScriptAnalyzer rules” nell’estensione, confrontando le release 2019.9.0 e 2019.11.0. Esamina il percorso del comando e la modifica di refactoring di OmniSharp sospettata e menzionata nell’issue. L’attività è completata quando il menu a discesa delle regole di PSScriptAnalyzer viene visualizzato come previsto.