Bug 31518: Fix syntax error on request.tt that prevents showing hidden item count

The variable set by request.pl doesn't have biblio prefix, it is just
hiddencount.

To test:
 1) Log in with a staff member account that has "Lost items in staff
 interface" setting set to "Hidden by default" in the patron category
 settings
 2) Add a lost item to biblio
 3) Go place a hold on staff interface (request.pl) notice the broken
 link on the request page: "Show all items ( hidden)"
 4) After applying the patch it should read "Show all items (1 hidden)"

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
(cherry picked from commit a45b105c24)

Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>

Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>
(cherry picked from commit 11e4196da6)
Signed-off-by: Arthur Suzuki <arthur.suzuki@biblibre.com>

koha-tmpl/intranet-tmpl/prog/en/modules/reserve/request.tt

@@ -789,7 +789,7 @@
                                         [% END # /FOREACH itemloo %]
                                     </tbody>
                                 </table> <!-- /#requestspecific -->
-
+				
                                 [% IF ( bibitemloo.hiddencount ) %]
                                     <form>
                                         <p class="hiddencount">
@@ -797,6 +797,7 @@
                                         </p>
                                     </form>
                                 [% END # /IF bibitemloo.hiddencount %]
+				
                             [% END # /FOREACH bibitemloo %]
 
                         [% ELSE # /UNLESS multi_hold %]