Fixes #111614

Part of microsoft/vscode-remote-release#4046

//cc @aeschli

This reverts commit 05c4659e.

//cc @aeschli

reuse stats collector for EchoRunner, fix missing titlePath-property, fixes https://github.com/microsoft/vscode/issues/114190

* make PowerShell 7 default if available and show in choose shell menu

* misc feedback

* better handle ARM and use pfs everywhere also update pfs to handle AppExecLinks

* fix test

* move to async

* add logging

* powershell global tool is in the image apparently

* have path test be the same

* try/catch the readlink

* await exists

* fix test

* check what arch node is

* fix indexes

* address daniel's feedback

* have getProgramFilesPath return null instead

Support output rendering in the notebook diff editor

https://github.com/microsoft/vscode-codicons/commit/4b668019e884d0e88094796ae9653609eebcfedd