Bug#1098707: gnome-core: Switch from evince to papers

[Jeremy Bícha]

I didn't see enthusiasm for my proposed change and I didn't end up
proposing the new translated string upstream. It's quite late for
Trixie so this change will need to wait for Forky.

I believe Ubuntu and RHEL 10 Beta (and related distros) are the only
distros to have switched to Papers early. Fedora 42 still uses Evince.

Thank you,
Jeremy Bícha