Goal
For our work on Checkusers-facing logging for Special:Investigate (T245662), we decided to reuse the cu_log table with a special value for cul_type to indicate that the logs are generated by the new special page so we can exclusively show those on the new special page's logs.
Conversely, we want to prevent the logs from the new special page from showing up in the old special page's logs.
Acceptance criteria:
- Log records created from the new Special:Investigate page do not show up in Special:CheckUserLog.