Bug 20772: Bug preventing backend JS execution

We should be 'PROCESS'ing any backend JS, not 'INCLUDE'ing it

Signed-off-by: Barry Cannon <bc@interleaf.ie>

Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>

koha-tmpl/intranet-tmpl/prog/en/modules/ill/ill-requests.tt

@@ -615,7 +615,7 @@
                     </div>
                 [% ELSE %]
                 <!-- Custom Backend Action -->
-                [% INCLUDE $whole.template %]
+                [% PROCESS $whole.template %]
 
                 [% END %]
         [% END %]