Opening URLs and programs from gh should ideally use wslview under WSL instead of xdg-open. In the past, we've added WSL support for URLs in #1708 (although it now lives here). However, the gh cs code command does not use github.com/cli/browser package, but instead uses github.com/skratchdot/open-golang/open, which doesn't support wslview.

A fix would be to either submit wslview support upstream to skratchdot/open-golang or to switch opening the vscode:// URL over to the cli/browser package.

Originally posted by @mislav in #4625 (review)