Preferences use match_parent for their layout in androidx

When recreating the layout for preferences in layoutlib, use
match_parent.

Bug: 152149363
Test: N/A
Change-Id: I0d639cf1ad97016876bba1738a0936afcb5f01ad
(cherry picked from commit 54b5281ce0a35dad664f1515738866df4159f809)
1 file changed