Bug 39300: Fix quick edit of subfields

Searching tag$subfield in the framework should redirect to the edition
of the tag with the subfield tab selected.
This has been broken when we used the wrapper for tabs on bug 33178.

Test plan:
Edit a framework
http://localhost:8081/cgi-bin/koha/admin/marctagstructure.pl?frameworkcode=
Search for 952$c
=> You are redirected to the edition of 952 and the "c" tab is selected

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Julian Maurice <julian.maurice@biblibre.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>
(cherry picked from commit b1efa3d71d)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>

admin/marctagstructure.pl

@@ -291,7 +291,11 @@ if ($op eq 'add_form') {
         # Hidden feature: If search was field$subfield, redirect to the subfield edit form
         my ( $tagfield, $tagsubfield ) = split /\$/, $searchfield;
         if ( $tagsubfield ) {
-            print $input->redirect('/cgi-bin/koha/admin/marc_subfields_structure.pl?op=add_form&tagfield='.$tagfield.'&frameworkcode='.$frameworkcode.'#sub'.$tagsubfield.'field');
+            print $input->redirect(
+                sprintf
+                    '/cgi-bin/koha/admin/marc_subfields_structure.pl?op=add_form&tagfield=%s&frameworkcode=%s#%s_panel',
+                $tagfield, $frameworkcode, $tagsubfield
+            );
             exit;
         }
 		#here, normal old style : display every tags