Merge "[soundtrigger] Move audio session out of lock" into main

    changed while the lock has been released.

  - Release the local lock.

  - Invoke any synchronous callbacks if needed.

- Calling from `SoundTriggerMiddlewareImpl` / `SoundTriggerModule` into the audio policy service via

  `acquireSession()` / `releaseSession()` while holding the local lock is legal.

- `setCaptureState()` calls, originating from Audio Policy Service, into the lower layers of the

  stack may call into the HAL (specifically, they must invoke `stopRecognition()`, but must not

  block on callbacks. For this reason, `SoundTriggerHw2ConcurrentCaptureHandler`, which is the

        @Override

        public int loadModel(@NonNull SoundModel model) {

            SoundTriggerMiddlewareImpl.AudioSessionProvider.AudioSession audioSession = null;

            final var audioSession = mAudioSessionProvider.acquireSession();

            try {

                synchronized (SoundTriggerModule.this) {

                    audioSession = mAudioSessionProvider.acquireSession();

                    checkValid();

                    Model loadedModel = new Model();

                    return loadedModel.load(model, audioSession);

        @Override

        public int loadPhraseModel(@NonNull PhraseSoundModel model) {

            SoundTriggerMiddlewareImpl.AudioSessionProvider.AudioSession audioSession = null;

            final var audioSession = mAudioSessionProvider.acquireSession();

            try {

                synchronized (SoundTriggerModule.this) {

                    audioSession = mAudioSessionProvider.acquireSession();

                    checkValid();

                    Model loadedModel = new Model();

                    int result = loadedModel.load(model, audioSession);