can't override language (content-negotiation) on packages.debian.org

[YumeYao <yumeyao@gmail.com>]

Package: www.debian.org

The language preference on packages.debian.org doesn't work right now.

I have followed the instructions in the "Debian Website in different
Languages" page (aka. cn) to override the settings to set the
preferred language to English, but I can still see pages in other
languages (according to the browser priority) in packages.debian.org.

My environment:
Microsoft Edge 138.0.3351.55 on Windows 10 64-bit.

Also I could confirm that there is a cookie in my browser, likely
created by the instructions mentioned above. But it has a domain scope
of "www.debian.org". I tried creating similar cookies using web
developer tools under the scope "packages.debian.org" or "debian.org",
and I noticed "lang=en" is there in http request headers, but the
pages on packages.debian.org simply don't honor the cookies.

Can you check if there is something wrong with packages.debian.org
server, and fix it if so.

Thanks in advance,
yumeyao