Log when removing bested checkpoint

Refs #197

Will help troubleshooting the issue if it ever appears again. I could not reproduce and it seems random

added P2 Quick Win labels

requested review from @mboillet

assigned to @yschneider

Looks good

Can you please rebase?

added 3 commits

• 9316ad0d...e0cb32b0 - 2 commits from branch main
• 47ec8226 - Log when removing bested checkpoint

Compare with previous version

approved this merge request

merged