Makes app settings keep scroll position after unistalling apps.

Bug: 32195844
Test: Manual inspection after numerous tries to write one. Espresso
didn't work because the test scenario involves installing an app.
Robolectric didn't either because it doesn't fully emulate
ListView's scroll behavior.

Change-Id: Ia811198ddee6edf6d207a4e936d2e686b64bf02f