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 bea25c7513)

src/com/android/settings/accessibility/ToggleScreenMagnificationPreferenceFragment.java

@@ -94,7 +94,7 @@ public class ToggleScreenMagnificationPreferenceFragment extends
         mPackageName = getString(R.string.accessibility_screen_magnification_title);
         mImageUri = new Uri.Builder().scheme(ContentResolver.SCHEME_ANDROID_RESOURCE)
                 .authority(getPrefContext().getPackageName())
-                .appendPath(String.valueOf(R.raw.accessibility_magnification_banner))
+                .appendPath(String.valueOf(R.raw.a11y_magnification_banner))
                 .build();
         mTouchExplorationStateChangeListener = isTouchExplorationEnabled -> {
             removeDialog(DialogEnums.EDIT_SHORTCUT);