lisa: Use sched_cpu_capacity event instead of cpu_capacity
Align with the upstream tracepoint name and "cpu" field name from our module.
GitLab Maintenance scheduled for Thursday, 18th December 2025, from 7:00 AM to 10:00 AM BST. GitLab will be in read-only mode and experience short periods of complete downtime (up to 20 minutes) during this window.
Align with the upstream tracepoint name and "cpu" field name from our module.