[audio] EX_ILLEGAL_ARG on unknown uid for NPC

This makes errors better and is consistent with the populate packages
for uid method.

Test: atest NativePermissionControllerTest.cpp
Bug: 338089555
Bug: 400951313
Flag: com.android.media.audio.audioserver_permissions
Change-Id: I3dba76c1d3570dc23bfdfc5d08ecc6caf5848031