Protect STHAL from duplicate UUID model loads

The STHAL aborts when duplicate UUID model loads are received.
To protect against this, we add a handler above both v2, v3 hals,
which rejects duplicate UUID model loads with RESOURCE_CONTENTION.

Fixes: 275058053
Test: atest SoundTriggerDuplicateModelHandlerTest
Test: manual verification of assistant/now playing
Change-Id: I53b249856fba49b3b33d5668660f4beb8611a20c