Bug 35287: Preparation: AdditionalFields License Mixin

Bug 35287: Preparation: AdditionalFields License Mixin

Koha::Object::Mixin::AdditionalFields needs to come before Koha::Object
in the inheritance so that the strings_map method that is called is
the one from Mixin and not from Koha::Object.
This is only required for Koha classes implementing the AdditionalFields Mixin and expose data through the REST API, because strings_map is implement in both the aforementioned classes

Signed-off-by: Edith Speller <edith.speller@ukhsa.gov.uk>
Signed-off-by: Michaela Sieber <michaela.sieber@kit.edu>
Signed-off-by: Victor Grousset/tuxayo <victor@tuxayo.net>
Signed-off-by: Paul Derscheid <paul.derscheid@lmscloud.de>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>