Improved cmd user list to show unresolved name.

When the user name is not explicitly set, UserManager uses a
"user-friendly" name for them, like "Owner" or "Guest", and
`cmd user` only displays that name, not the unresolved one (null).

Similarly, `dumpsys user` only shows the unresolved name, although it
also shows the "Owner name" in a separate section.

This CL includes the raw name on `cmd user` and the guest name on
`dumpsys user`.

Test: adb shell dumpsys user |grep "Guest name"
Test: adb shell cmd user list -v --all | grep unresolvedName
Bug: 407597096
Flag: EXEMPT changes debugging behavior only

Change-Id: I502f0b037e2d44ec6c90e7736a2950bc0dbfa220