Bug 29540: Raise flagsrequired in modrequest

Test plan:
Try modrequest with a user having only 'catalogue' perms and the following URLs:
[1] /cgi-bin/koha/reserve/modrequest.pl?reserve_id=XX&CancelBorrowerNumber=XX&CancelItemnumber=XX&biblionumber=XX
    Fill the XXs with correct identifiers for some item level hold.
[2] /cgi-bin/koha/reserve/modrequest_suspendall.pl?suspend=1&suspend_until=2021-12-01&borrowernumber=XX
    Fill the XX with borrowernumber for borrower that has pending holds.
You should see: Error: You do not have permission to access this page.

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
[AMENDED] More consensus for using reserveforothers than circulate_remaining.

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>

Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
(cherry picked from commit 15285ae209)
Signed-off-by: Victor Grousset/tuxayo <victor@tuxayo.net>
(cherry picked from commit 906228266b05fa660476d1f5b9320ac79241db82)

Signed-off-by: Wainui Witika-Park <wainuiwitikapark@catalyst.net.nz>

reserve/modrequest.pl

@@ -35,7 +35,7 @@ my ( $template, $loggedinuser, $cookie ) = get_template_and_user(
         template_name   => "about.tt",
         query           => $query,
         type            => "intranet",
-        flagsrequired   => { catalogue => 1 },
+        flagsrequired   => { reserveforothers => 1 },
         debug           => 1,
     }
 );

reserve/modrequest_suspendall.pl

@@ -34,7 +34,7 @@ my ( $template, $loggedinuser, $cookie ) = get_template_and_user(
         template_name   => "about.tt",
         query           => $query,
         type            => "intranet",
-        flagsrequired   => { catalogue => 1 },
+        flagsrequired   => { reserveforothers => 1 },
         debug           => 1,
     }
 );