fix(vscode-web): set --host 127.0.0.1

[matifali]

MS code-server defaults to using --host localhost, which worked perfectly with Coder.

But recently Coder is failing to proxy vscode-web with the coder/coder#12790

As a workaround, setting --host 127.0.0.1 works.

Details

ok so Running (the default if we skip --host)
/tmp/vscode-web/bin/code-server serve-local --port 13340 --host localhost --accept-server-license-terms serve-local --without-connection-token --telemetry-level error gives

Server bound to ::1:13338(IPv6)
Extension host agent listening on 13338

But if we set --host 127.0.0.1

Server bound to 127.0.0.1:13338 (IPv4)
Extension host agent listening on 13338

[12:55:24] 

Web UI available at http://localhost:13338/
[12:55:24] Extension host agent started.

This binds to ipv4.
Is this something that changed at Coder or Microsoft?
Because vs code-server was setting --host localhost and did not change any behavior.