Bug 37651: Add ConfirmFutureHolds to item->current_holds

Test plan:
Add future item level hold for another branch.
Check in. Confirm and transfer.
Note that without this patch, there is no patron info for the column
On hold for on transferstoreceive.

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>
(cherry picked from commit 503a81efe1)
Signed-off-by: Paul Derscheid <paul.derscheid@lmscloud.de>

Koha/Item.pm

@@ -1172,11 +1172,12 @@ sub current_holds {
     my ($self)     = @_;
     my $attributes = { order_by => 'priority' };
     my $dtf        = Koha::Database->new->schema->storage->datetime_parser;
+    my $dt         = dt_from_string()->add( days => C4::Context->preference('ConfirmFutureHolds') || 0 );
     my $params     = {
         itemnumber => $self->itemnumber,
         suspend    => 0,
         -or        => [
-            reservedate => { '<=' => $dtf->format_date(dt_from_string) },
+            reservedate => { '<=' => $dtf->format_date($dt) },
             waitingdate => { '!=' => undef },
         ],
     };