Bug 33159: Correctly form thesaurus term for non-subject headings

Bug 33159: Correctly form thesaurus term for non-subject headings

Bug 30280 fixed things for subject heading, but didn't take into account
that all non-subject headings are considered LCSH - this means we can't
really handle different thesauri for controlled headings outside of
subjects - maybe a topic for a new bug, but we should fix matching for
them now

To test:
 1 - Set sysprefs:
    RequireChoosingExistingAuthority - don't require
    AutoCreateAuthorities - generate
    CatalogModuleRelink - Do
    AutoLinkBiblio - Do
    LinkerModule - first match
 2 - Find a record with an author attached to an authority, I used
  biblionumber 3 "Introduction to Attic Greek"
 3 - Edit in advanced editor
 4 - Delete the $9 link
 5 - Save the record
 6 - It generates a new number
 7 - Repeat 4-5, it does it again
 8 - Apply patch and restart all
 9 - Repeat 4-5
10 - It links to the original authority

Signed-off-by: Phil Ringnalda <phil@chetcolibrary.org>
Signed-off-by: Frank Hansen <frank.hansen@ub.lu.se>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>