Bug 34571: Remove use of "onclick" for ExpandField in cataloguing editors

Bug 34571: Remove use of "onclick" for ExpandField in cataloguing editors

This change replaces the onclick HTML attribute with a Javascript binding
to make it more in line with Koha conventions and make it CSP compatible.

Test plan:
0. Apply patch
1. Go to http://localhost:8081/cgi-bin/koha/cataloguing/addbiblio.pl?frameworkcode=#
2. Try hiding/unhiding fields
3. Try cloning fields and hiding/unhiding those too
4. Note that everything works as expected
5. Do the same thing for authorities by going to
http://localhost:8081/cgi-bin/koha/authorities/authorities.pl?authtypecode=#

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>