Show Default app shortcut preference only when app is qualified.

This change uses the new isApplicationQualifiedForRole() API on
PermissionControllerManager to correctly report availability of
default app shortcut preference.

Bug: 110557011
Bug: 123238935
Test: atest DefaultAppShortcutPreferenceControllerBaseTest DefaultSmsShortcutPreferenceControllerTest
Change-Id: Ib86ab0fd84334a149f7c6c3556297745f2990f47