Retries without backoff or pause if /api/data/sessions returns a 422

[olevski]

To replicate:

• make the api return 422 - this would have to be hardcoded
• the ui keeps retrying without waiting over and over and does not stop
• this makes the browser window laggy
• it can also take down the backend

There should be at least some wait period before failed requests are retried. Or even better they can be retried 1 immediately but afterwards there should be a waiting period that increases on every retry (i.e. retry with an exponential backoff).

[lorenzo-cavazzi]

Issue here #3620