Use filename disposition parameter in downloads

[davehagler]

Currently when an api returns "content-type": "application/octet-stream" and "content-disposition": "attachment", a filename is generated for the download that looks like

[content type]:[url parameters]:generated

In cases where the api returns a filename= disposition parameter, this value could be used when saving the downloaded file.

For example if this header is sent in the response

"content-disposition": "attachment; filename=my_file.txt"

Then the downloaded file would be called "my_file.txt"

[webron]

Fixed by #1993.

[patelneelj]

@davehagler @webron
I am using swagger-UI version3.25.0still I am getting this issue.
Is anyone encounter the same issue still?