Upstream "Respect system proxy settings for WebSocket"

[Saadnajmi]

#1725 made a fix to Websocket that should be upstream able once we've tested it a bit.

[github-actions]

This issue is stale because it has been open 180 days with no activity. Remove stale label or comment or this will be closed in 7 days.

[amgleitman]

A proper fix has already been upstreamed with facebook#36347. We should be able to close this.