Only accept NonNull data byte array in RecognitionConfig.Builder

Bug: 370580176
Flag: android.media.soundtrigger.manager_api
Test: atest android.soundtrigger.cts.SoundTriggerTest.
Test: Successfully load the generic sound model and verify
      sound trigger event could be triggered correctly on
      Pixel watch devices.
Test: AlwaysOnHotwordDetector could be started successfully
      and okay G will invoke Assistant when DSP hotword is
      enabled on Pixel watch devices.
Change-Id: I1ca6d7d90c14accd168ec06acf9f67ea50afa0ca