Consider making "Time tracking units limited to hours" default to on
For time tracking, we currently use the conversions: 1mo = 4w, 1w = 5d, 1d = 8h. This can be confusing and not clear to users unless they read the docs.
!29469 (merged) adds an instance-level setting that limits the displayed units to hours. This means
25h 30m would be displayed instead of
3d 1h 30m. This was a highly-requested feature in #30355 (closed)
We should consider limiting the units to hours so that this is less confusing. Even GitLab team members didn't know about this quirk and were confused too (!29469 (comment 181503806))
Note that the setting changes the units used to display the time but users can still enter
/estimate 1w and it would still use those conversions.
Also, old system notes like
changed time estimate to 1w won't be updated by the setting because content of system notes are saved in the DB.