$wgLoginNotifyUseSeenTable is true and $wgLoginNotifyUseCheckUser is false on all WMF wikis (relevant config) and this seems stable. Therefore, the values should be updated in extension.json as the "pilot" on WMF wikis looks to have been completed.
Doing this brings the deprecation of the CheckUser integration closer. This ticket is also necessary due to T357832: Update LoginNotify to read data from cu_private_event and cu_log_event if $wgLoginNotifyUseCheckUser is true, as soon the CheckUser integration will have less data about recently used IPs (as some of this data will be moved to other tables than cu_changes). As such, using the MediaWiki-extensions-LoginNotify table over CheckUser by default will improve the default third-party wiki experience.
Acceptance criteria
- wgLoginNotifyUseSeenTable should be true in extension.json
- wgLoginNotifyUseCheckUser should be false in extension.json