Group alerts API missing title value

[LumePart]

Hello! I'm running the hobby version of grafana (fresh install). When connecting to OnCall with Grafana integration and sending a test alert (or setting up a new alert and letting it fire) the Group alert API query displays title as "null".

[matiasb]

Adding a few more details. It looks like since we process alerts from newer Grafana through the AlertManager handler, we are not setting a title (message neither) in the created alert, but it seems we used to do it for previous Grafana versions. I noticed we don't extract any title or message value for the alert when processing it (I guess because templates could be customized), but maybe we should expect something and/or fallback to use some defaults?