Allow new notifications to be created with old timestamps
Allow new notifications to be created with old timestamps

Bug: T93109
Change-Id: Ib9596cc058871a6b27cca7a809efc6b1ca75dfb0

wikimedia/mediawiki-extensions-Echo,wikimedia/mediawiki-extensions-Echo,wikimedia/mediawiki-extensions-Echo,wikimedia/mediawiki-extensions-Echo