Wrong mime type

Hello, if I upload an image using the .NET SDK, the mimetype for my png images is set to "application/octet-stream" instead of "image/png".

This is my code

TypeScript

    ```public async Task<string> CreateFileAsync(string bucketId, string filename, string content, string mimeType)
    {
        using var stream = new MemoryStream(Encoding.UTF8.GetBytes(content));

        var inputFile = InputFile.FromStream(stream, filename.ToLower(), mimeType);
        var fileId = ID.Unique();
        inputFile.Path=filename.ToLower();
        try
        {
            var fileToWrite = await _storage.CreateFile(bucketId, fileId, inputFile, new List<string>());
            return fileToWrite.Id;
        }
        catch (Exception ex)
        {
            Console.WriteLine($"Error: {ex.Message}");
        }
        return "";
    }```