Cross-Reference repeated timeouts

Users report repeated timeouts for some queries on https://buildbot.mariadb.org/cr/
The purpose of this task is to analyze those queries and see what optimizations can be applied
either on the application level or database (e.g. missing indexes, stale statistics).

Examples of such queries:
https://buildbot.mariadb.org/cr/?branch=&revision=&platform=&dt=2026-01-01&max_dt=&bbnum=&typ=&info=&test_name=galera.galera_safe_to_bootstrap&test_variant=&info_text=&failure_text=&limit=5&sort_order=desc#

https://buildbot.mariadb.org/cr/?branch=&revision=&platform=&dt=&max_dt=&bbnum=&typ=&info=&test_name=&test_variant=&info_text=&failure_text=end_lsn+%3D%3D+page_lsn&limit=10&sort_order=asc#

https://buildbot.mariadb.org/cr/?branch=&revision=&platform=&dt=&max_dt=&bbnum=&typ=&info=&test_name=&test_variant=&info_text=&failure_text=Malformed+log+record&limit=100&sort_order=desc#