Add 'open-not-in-progress' updates allowed setting.

Allows updates on open reports that aren't in progress.
For https://mysocietysupport.freshdesk.com/a/tickets/4990.

perllib/FixMyStreet/Cobrand/UK.pm

@@ -466,6 +466,7 @@ sub _updates_disallowed_check {
     my $staff = $body_user || $superuser;
     my $reporter = $c->user_exists && $c->user->id == $problem->user->id;
     my $open = !($problem->is_fixed || $problem->is_closed);
+    my $in_progress = $problem->is_in_progress;
     my $body_comment_user = $self->body && $self->body->comment_user_id && $problem->user_id == $self->body->comment_user_id;
 
     if ($cfg eq 'none') {
@@ -475,6 +476,8 @@ sub _updates_disallowed_check {
         return $cfg unless $staff;
     } elsif ($cfg eq 'open') {
         return $cfg unless $open;
+    } elsif ($cfg eq 'open-not-in-progress') {
+        return $cfg unless $open && !$in_progress;
     } elsif ($cfg eq 'reporter') {
         return $cfg unless $reporter;
     } elsif ($cfg eq 'reporter-open') {

t/cobrand/councils.t

@@ -63,6 +63,8 @@ subtest "Test update shown/not shown appropriately" => sub {
             { type => 'reporter/staff-open', state => 'in progress', update => [0,1,1] },
             { type => 'open', state => 'closed', update => [0,0,0] },
             { type => 'open', state => 'in progress', update => [1,1,1] },
+            { type => 'open-not-in-progress', state => 'in progress', update => [0,0,0] },
+            { type => 'open-not-in-progress', update => [1,1,1] },
         ) {
             FixMyStreet::override_config {
                 ALLOWED_COBRANDS => $cobrand,