ONSPPropagationGeometry loading from file is broken on Quest.

In the file ONSPPropagationGeometry the ReadFile method tries to read directly from Stream Assets, but on Android this has to be done using a UnityWebRequest. The code below is a workaround that reads the file out of streaming assets and saves it to persistent data. I just tried this on Quest and it seems to work.

Just need to replace these two methods:

void CreatePropagationGeometry()
{        
    // Create Geometry
    if (ONSPPropagation.Interface.CreateAudioGeometry(out geometryHandle) != OSPSuccess)
    {
        throw new Exception("Unable to create geometry handle");
    }

    // Upload Mesh
    if (!string.IsNullOrEmpty(filePath) && fileEnabled && Application.isPlaying)
    {
        ReadFile(success => {
            if (!success)
            {
                Debug.LogError("Failed to read file, attempting to regenerate audio geometry");

                // We should not try to upload data dynamically if data already exists
                UploadGeometry();
            }
        });
    }
    else
    {
        UploadGeometry();
    }
}

public void ReadFile(Action<bool> callback) {
 string geoFilePath = filePath;

 if (string.IsNullOrEmpty(geoFilePath))
{
Debug.LogError("Invalid mesh file path");
 callback?.Invoke(false);
 }

#if UNITY_ANDROID
if (geoFilePath.StartsWith("jar:")) {
// strip the apk prefix off the file uri.
 var splithPath = geoFilePath.Split('!');
 var dataPath = Path.Combine(Application.persistentDataPath, splithPath[1].Substring(1));

 if (File.Exists(dataPath)) {
geoFilePath = dataPath;
 }
else {
// read the file out of the apk and save it to persistent data.
 var request = UnityWebRequest.Get(filePath).SendWebRequest();

 request.completed += delegate(AsyncOperation operation) {
var asyncWebOp = operation as UnityWebRequestAsyncOperation;

 if (asyncWebOp.webRequest.result == UnityWebRequest.Result.Success) {
var directory = Path.GetDirectoryName(dataPath);

 Directory.CreateDirectory(directory);

 File.WriteAllBytes(dataPath, asyncWebOp.webRequest.downloadHandler.data);

 // now that the file's in place, try again.
 ReadFile(callback);
 }
else {
Debug.LogError($"couldn't retrieve geo file: \"{filePath}\"");
 callback?.Invoke(false);
 }
};

 return;
 }
}
#endif

 if (ONSPPropagation.Interface.AudioGeometryReadMeshFile(geometryHandle, geoFilePath) != OSPSuccess)
{
Debug.LogError("Error reading mesh file " + geoFilePath);
 callback?.Invoke(false);
 }

callback?.Invoke(true);
 }