Flip appops corresponding to default-granted permissions

Not that we're starting to change appops' default values
for sms/calllog permissions, default grants by DefaultPermissionGrantPolicy
must take care to also flip the appops, otherwise permission grants don't
take the desired effect.

This also fixes the `appops get` shell command to reflect both uid and
package mode, consistent with how appops are checked

Bug: 117623587
Test: - enable kill switch for sms access restriction
- adb install -g $ANDROID_BUILD_TOP/out/target/product/sailfish/data/app/CellBroadcastReceiverTests/CellBroadcastReceiverTests.apk
- launch the app and press any button
- ensure no "Appop denial" warning in logcat
----
- adb shell appops get com.android.cellbroadcastreceiver android:receive_sms
- ensure result reflects uid mode
Change-Id: I59bb0c89423d3636c310c21b7a1cbf0481c992eb