pdf download issues with firefox

[landryb]

not sure if related to #143 or georchestra/cadastrapp#615 but with cadastrapp 1.9.3 (from https://github.com/landryb/cadastrapp/commits/1.9.3-craig) firefox 95 and ms2-cadastrapp we're having BP download issues, the response headers show (be it with mfapp or ms2-cadastrapp)

Content-Disposition | attachment; filename=BP1639138287532.pdf
Content-Type | application/pdf

is ms2-cadastrapp firefox displays 'a partir de :blob:' (and the correct mimetype/content-type) but doesnt propose direct opening of the pdf within firefox while in mfapp it works, eg firefox displays 'a partir de : https://ids.craig.fr' and proposes to open the pdf within firefox (eg with pdf.js)

from what i can see of the other request headers (not response), from mfapp firefox sends:

Sec-Fetch-Dest: iframe
Sec-Fetch-Mode: navigate
Sec-Fetch-Site: same-origin

while from ms2-cadastrapp firefox sends:

Sec-Fetch-Dest: empty
Sec-Fetch-Mode: cors
Sec-Fetch-Site: same-origin

cf https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers#fetch_metadata_request_headers

i dunno if those request headers have something to do with those pdf download issues...