flowTotalSize is 0 when uploading folder with longer path

[arifmahammad]

Steps to produce

1. Create folder inside folder and make long path . (absolute path with a total number of more than 256 characters)
2. Put valid files inside folder
3. Upload via flow js using folder upload
4. Observe request headers , flowCurrentChunkSize ,flowTotalSize , both will be set as 0.