Enhance IMS related shell commands to also specify an optional User

When running IMS related CTS tests, we override the IMS package.
To support HSUM devices, ensure that the user is also specified in
the override.

Flag: com.android.internal.telephony.flags.ims_resolver_user_aware
Bug: 371272669
Test: atest CtsTelephonyTestCases
Change-Id: Ifacc64406a406c792f3bb20bccc58e88b5fdd23b
2 files changed