Redirects should not be in wb_entity_per_page.

Our main use case for the wb_entity_per_page table is
listing entities. We don't want to encounter redirects
when doing that.

For now, rely on core's redirect table for recording redirects.

Bug: 66581
Change-Id: I5289f69dd8c2c3f34f2bd549124dc510995ad5d7
Merge "Redirects should not be in wb_entity_per_page."