Allow setting save_delay to 0
tokio doesn't allow creating an interval for 0 time, which is probably reasonable, so we need to skip that code path if we want to avoid save delays.
Bug: T333423
How to register an account on GitLab. To prevent spam, new accounts are locked until approved by an admin or the approver bot. You can also file an unlock request to expedite access.
Support: mw:GitLab, how to host a project on GitLab, #wikimedia-gitlab on libera.chat, #GitLab on Phabricator.
tokio doesn't allow creating an interval for 0 time, which is probably reasonable, so we need to skip that code path if we want to avoid save delays.
Bug: T333423