Update the uid value to the calling package uid

Per the atom definition, the uid of the call stats should be from
the calling package, not the UserHandle id.

Flag: com.android.server.telecom.flags.telecom_metrics_support
Bug: 378102779
Test: atest TelecomUnitTests:TelecomPulledAtomTest
Test: manual
Change-Id: I924efd7a1ae28c2ac921504f385e3bd61d780b39