Large icon for permission deicison reminder

Auto only shows large icons instead of small icons. By default, the
package icon is shown. We use the override supported by CarSystemUI to
set a custom icons, which is the dynamically loaded Settings icon. The
ultimate fallback will be an empty icon.

Screenshot: https://hsv.googleplex.com/6265181807050752

Bug: 223835136
Test: Manual testing
Change-Id: I2ed8cd2833359678330e4047256909b42fe0b8a3
Merged-In: I2ed8cd2833359678330e4047256909b42fe0b8a3