Hard coded limit of 10 returned grouped-by fields?

[keehun-cf]

I am trying to create a Grafana chart that contains all Sentry events grouped by our release versions, and we noticed that we're only getting 10 results back. This seems to be hard-coded in https://github.com/grafana/sentry-datasource/blob/main/pkg/sentry/events_stats.go#L39.

Would it be possible to configure this upper limit for private instances of Grafana/Sentry? Practically, we only need maybe 25-30 as our upper limit, and it would be great to be able to configure this and test it out.