[audio] Handle targetSdk failures for recording

We check targetSdk for compat reasons when deciding whether to silence
audio records due to FGS. In cases where package manager fails to return
the correct value (due to the app not being installed in system user),
treat the app as running on the latest version.

Bug: 326572419
Flag: EXEMPT security
Test: manual POC
Test: manual oboetester in work profile only background recording
Change-Id: Ibc735ea463aa6e09f8a24fc3cb50c39b70bbbea8