Fix the dumpsys using deprecated API for getting calling package names

Some system services were not receiving the right calling package names
which was being used to verify the caller.

This change makes it easier to get the calling package name using the
context API.

BUG=241041706
Test: "adb shell dumpsys hardware_properties" works now.

Change-Id: I3489d39980c9a4c72011115b911a59b43980799e