Add role protection to READ_BLOCKED_NUMBERS.

Change-Id: Icfb9c27d9b72396fbe51818330706cbaadc5344a
Context: Android System Intelligence needs this permission via the role SYSTEM_UI_INTELLIGENCE to filter out blocked phone numbers from contact suggestions.
Bug: 354758615
Flag: android.permission.flags.grant_read_blocked_numbers_to_system_ui_intelligence