Investigate high latency calls to ListEvaluationResults

[eleftherias]

We've been getting alerts that ListEvaluationResults has had high latency. It's possible there's a user with several evaluation results, which causes this endpoint to be slow.

Let's find the maximum number of evaluation results for our current users, and recreate a profile with a similar number of alerts. We should time that and see if it is fast enough or how we can improve it.

Example alert https://stacklok.slack.com/archives/C073VMA1PB2/p1726583917065719

[jhrozek]

@blkt didn't you fix this with adding the indexes?

[eleftherias]

This doesn't appear to be a problem anymore