report_results: pass 'modular' value when looping back
`report_results` calls itself, when it wants to loop back to
the start of the process for some reason. Sometimes we want to
do this with the same compose selected; when we do, we must
pass the `modular` value, or else we will ask the user again
whether they're reporting for a Modular compose. Most obviously,
if you use the option to report another result after the first,
it asks you again if the compose you're reporting for is
modular; we don't want that.
Signed-off-by: Adam Williamson <awilliam@redhat.com>