Why:
* In f3c87749b8, the sending of logs
to CheckUser when using a temporary account was fixed. As part
of that change, it was suggested to add a test to verify that
the call to `Hooks::updateCheckUserData` actually causes an
insert into the relevant CheckUser result table.
* This change adds this test as a follow-up.
What:
* Create a test for the AbuseLogger that verifies that an event is
sent to CheckUser and is saved into the DB for an abuse filter
hit. This test is only run if the CheckUser extension is installed.
Bug: T358632
Change-Id: I33ed0810db13e38eacf4e682eb54d4ffcd583084
f4e3f78b7e