devcontainer: confusing SCM view when git is not installed

[akosyakov]

Version: 1.92.2
Commit: fee1edb8d6d72a0ddff41e5f71a671c23ed924b9
Date: 2024-08-14T17:29:30.058Z
Electron: 30.1.2
ElectronBuildId: 9870757
Chromium: 124.0.6367.243
Node.js: 20.14.0
V8: 12.4.254.20-electron.0
OS: Darwin arm64 23.6.0

Steps to Reproduce:

1. Start a dev container without git.
2. VS Code is going to propose how to install Git in SCM view, but for your local machine, not remote container.

Does this issue occur when you try this locally?: Yes/No
Does this issue occur when you try this locally and all extensions are disabled?: Yes/No

[bamurtaugh]

cc @lszomoru since I wonder if this would live more in the SCM view logic rather than the Dev Containers extension (and SCM view would look different if it detects it's in a remote environment)

[lszomoru]

@digitarald, I suspect that we should not be showing the "install" welcome view when connected to a remote.