The default expiry was also changed in the GitLab admin web interface.

Closes: tpo/tpa/team#40561

this reflects better the workflow of proposals

The policy was marked as "draft" in the document, but classified as
"standard" in the list because the deadline had expired without
objection, so it technically *was* standard.

In any case, it was implemented and now is therefore obsolete (because
it's useless to keep such an historical proposal forever).