Increase stability of audio focus CUJ tests.

Apparently 3 sec is just not enough time to get focus in some cases.
Also, incoming calls may receive a AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK
response for the type of audio focus.

Fixes: 363378419
Test: This is a test:
Flag: NONE - test only fix
Change-Id: I347af729e194393e72576dca26594bee85b382e3
2 files changed