Adds `-s` to shebang lines.
The `-s` flag ensures that the user’s Python packages (e.g. installed by
pip install --user) don’t interfere with the RPM installed software.
According to Fedora Python Packaging Guidelines, the flag is added using
`%py3_shebang_fix` macro.

Note:
DNF supports plugins. There is a risk that the change will break
a custom plugins that require something from PIP.
Therefore, the change is only in the .spec file and is only allowed
for Fedora >= 41 and RHEL >= 10.

If no duplicates are present, then the command succesfully removed all
duplicates and should exit with 0 and write the message to stdout
instead of stderr.

Resolves: https://issues.redhat.com/browse/RHEL-6424

If no old installonly packages are present, then the command succesfully
removed all of them and should exit with 0 and write the message to
stdout instead of stderr.

When `-f` option is used, the argument is stored in the `opts.file` instead of the `opts.key`. We need to load filelists also in this case.

= changelog =
msg: repoquery: Fix loading filelists when -f is used
type: bugfix
resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2276012