Do not reset per package appop modes for permissions

Settings currently sets modes per package for some special access
permissions like SYSTEM_ALERT_WINDOW and REQUEST_INSTALL_PACKAGES. They
would get reset whenever this is called.

Test: atest --test-mapping
Manually, check that special access permissions do no reset after
installing a package or reboot. Or, use shell commands, e.g.:
1. adb shell appops set com.android.chrome REQUEST_INSTALL_PACAKGES \
allow
2. adb reboot
3. Verify that
adb shell appops get com.android.chrome REQUEST_INSTALL_PACKAGES
returns allow.

Bug: 123581307
Change-Id: Ia839f7acd1b44b279552828427a17c6eb239c002