MediaLibrary: Fix migration 16->17 comment

4 jobs for flush_notifications_early in 22 minutes and 17 seconds (queued for 7 minutes and 46 seconds)
Status Job ID Name Coverage
  Test
passed #288164
amd64 debian
asan-ubsan

00:09:17

passed #288161
amd64 debian
linux

00:09:40

passed #288162
win32
win32

00:12:29

passed #288163
win64
win64

00:10:53