Link directly to specific error not just the overall issue

<img width="1139" alt="image" src="https://github.com/getsentry/sentry/assets/1421724/15d25d0c-521e-4a70-b33c-0c568b230111"> When we have associated Issues with check-ins, the links should ideally link directly to the most recent specific error associated to the check-in, NOT just the grouped issue. This is because sometimes the issue may be getting grouped for problems happening across the app, not just in one cron job.