Checking for speaker support on WearOS.

MainActivityWear.java

            PackageManager packageManager = getPackageManager();
            // The results from AudioManager.getDevices can't be trusted unless the device
            // advertises FEATURE_AUDIO_OUTPUT.
            if (!packageManager.hasSystemFeature(PackageManager.FEATURE_AUDIO_OUTPUT)) {
                return false;
            }
            AudioManager audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
            AudioDeviceInfo[] devices = audioManager.getDevices(AudioManager.GET_DEVICES_OUTPUTS);
            for (AudioDeviceInfo device : devices) {
                if (device.getType() == AudioDeviceInfo.TYPE_BUILTIN_SPEAKER) {
                    return true;
                }
            }