RESTRICT AUTOMERGE Fix certain Accessibility Settings subpages use wrong resources

Root cause: Portrait mode does not always respect the sw600dp qualifier and instead uses the phone (default) resources.
Solution: Using the product to customize the tablet and phone cases is better way than using the configuration qualifier.

Bug: 269130587
Test: Manual testing
Change-Id: I90cc44f1e9bccf8950a4d89f70119ba5e3c0bfdc
(cherry-pick of commit bea25c75)