Bug 37753: Fixed navigation links when editing authority type subfields

Bug 37753: Fixed navigation links when editing authority type subfields

To test:
1. Go to Koha administration > Catalog > Authority types.
2. For any authority type, select Actions > MARC structure.
3. For any tag that has multiple subfields (for example 020 ISBN), select Actions > Subfields.
4. Select Edit for any subfield.
5. Notice that the links are now in the standard tabbed style.

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>