Use the specified page ID for LinksDeletionUpdate

This makes LinksDeleteJob use the correct page ID when a new
page was later created at the title. The links and protection
rows to clear should always be for the ID of the actual page
being deleted.

This fixes a bug when pages are moved over redirects.

Bug: T128624
Change-Id: Id67a021539b97020e8dd32d56dba1b77c806f31c