can not download a file over 2GB,  after modify RNFetchBlobBody file

according to ‘https://github.com/joltup/rn-fetch-blob/pull/118/files#diff-f27851ca66016d2a5936b4dc68144330’， modify the  ‘  int totalWritten = 0;’  to '  long totalWritten = 0;'
and ' private void emitUploadProgress(int written) ' to ' private void emitUploadProgress(long written) ' 
also can not download a file over 2GB