Pass configuration changes to all pages

In PagedTileLayout, all pages are inflated previously and the view pager
only attaches/dettaches pages. However, configuration changes are only
dispatched to direct children of the view. This change makes it so that
non-attached pages are also notified.

In particular, fontWeightAdjustment was not being passed, and it's not
one of the changes that causes fragments in SystemUI to be reinflated.

Test: manual
Fixes: 200882432
Change-Id: Ie2bd0eccf1d1e71f364501612bb6e6be8aa29bc9