Prefer users to open new issues if closed stale issue is valid (#19428)

I no longer want to have to keep my ears and eyes open for GitHub
notifications that relate to someone requesting a closed stale issue be
reopened. As a community maintainer, I can get hundreds or even
thousands of notifications a week, and a lot of those are about activity
on closed issues. If everyone following an issue did not react fast
enough (7 days) to keep an issue flagged as `stale` open, let's instruct
them to open new issues, so we are forced to see it during next triage.

Release Notes:

- N/A