Remove title protection correctly for undeletions and imports

Remove title protection correctly for undeletions and imports

Undeletions and imports can both produce "new" pages with more than
1 revision. The fact that $options['created'] for the associated
DerivedPageDataUpdater instance is unexpectedly changed to false is due
to the fact that the latest revision often has a nonzero rev_parent_id.
This causes WikiPage::onArticleCreate not to be applied correctly, and
so title protection is not correctly removed. The part about "created"
being forced is therefore being fixed.

Bug: T200088
Change-Id: I8c899893486976285eb6fac87d641e93a616676d