Override policy fixed state on package uninstalled

If package A defines a permission which is policy fixed as granted for
package B, then we need to override this state when uninstalling package
A.

Fixes: 155322839
Test: Manual
      atest CtsPermission{,2,3}TestCases
Change-Id: Ie57346e12eb43f51bde6b053959af370ebfa674d
1 file changed