Bug in download options provided in Looks

[Ganesh_Pai_K_V]

Steps to reproduce;

1. Navigate to download from here option available in the look.
2. Select format as JSON
   3.Observe the filename
3. Select the format as CSV or any other format
4. Observe the file name

Expected Result
File name should be filename.csv

Actual Result:
Filename is Filename.json_label.csv