Fix "Flash Of Unstyled Content" in new login screen

[jankeromnes]

Bug description

There is a "Flash Of Unstyled Content" in Gitpod's new context-aware login screen.

Screencast (where I reload multiple times to show the problem):
https://youtu.be/Z8RAFGaXHuY

Steps to reproduce

1. Make sure you're rolled into the new login screen experiment (in a browser console on gitpod.io)

localStorage['gitpod-ui-experiments'] = '{"login-from-context-6826":true}';

2. Log out of gitpod.io

3. Visit https://gitpod.io/#https://github.com/gitpod-io/gitpod and see the new login screen

There is a "Flash Of Unstyled Content" when you (re)load it (i.e. it first renders something, then re-renders something different, causing a briefly unstable UI).

Here is a screencast where I refresh multiple times to show the problem:
https://youtu.be/Z8RAFGaXHuY

Workspace affected

No response

Expected behavior

The initial rendering should be stable (i.e. render the correct UI in one shot).

Example repository

No response

Anything else?

No response

[jldec]

/schedule

[roboquat]

@jldec: Issue scheduled in the meta team (WIP: 0)

In response to this:

/schedule

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.