If authrorization fails, the page is reloading over and over again

[HanaGemela]

Desktop client: 2.6.0 (build 12703)
macOS 10.15
Server 10.3.0 stable
oAuth2 0.4.2RC3

Steps to recreate:

1. Login with oAuth2 using enabled user
2. Let the desktop client sync
3. Quit the client
4. Disable the user
5. Start the desktop client

Actual result: Page with "Disabled user" message keeps reloading. It will eventually stop reloading and login page will be shown but till then the page reloads over and over again

Expected result: Page is not reloading

Found during testing #209

[DeepDiver1975]

Next steps:

• analyse what is causing the reload
• owncloud 10 frontend by itself is not reloading this page afaik
• please double check the client implementation which is opening the browser window
• in addition: analyse the network tab on dev tools - this could give a hint