use lightweight mode by default when vscode is running from web browsers

[Eskibear]

The purpose is to reduce pop-up notifications.
Here we remove the notification, and by default only launches LS in lightweight mode if vscode is running from a web browser. It's based on the hypothesis that when users open vscode on a web browser they mainly want to browse code or do simple editing.

[fbricon]

@rgrunber make sure this change doesn't break the Che/Theia integration

[rgrunber]

This definitely affects Theia. env.uiKind is '2' (UIKind.Web) so the various prompts are skipped. Perhaps env.appName may need to be used to further narrow this down ?

[Eskibear]

I just tested some scenarios on VS Code, below are possible values I found:

• env.uiKind
  • 1 for desktop
  • 2 for web
• env.appName
  • Visual Studio Code
  • Visual Studio Code - Insiders
• env.remoteName
  • wsl when using Remote-WSL
  • ssh-remote when using Remote-SSH
  • codespaces when using GitHub Codespaces

So yes, we can check env.appName if you want to keep this notification in Che/Theia. Furthermore, with env.remoteName we actually have the potential to optimize for different scenarios.

[akaroml]

I may suggest env.uiKind === "web" && env.appName.contains("Visual Studio Code")

[Eskibear]

OK, I've updated the PR to check both env.uiKind and env.appName

[rgrunber]

Looks fine to me. I can confirm Theia is excluded.