Bug 22605: (QA follow-up) Make Braille search option stick

Bug 22605: (QA follow-up) Make Braille search option stick

To test:
- Add to records, one with 007 fb and another with 007 tc
- Search for Format: Braille from the advanced search
- Verify both records are found
- Return to advanced search
- Verify that Braille is still selected
- Rerun search - same results show

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>
(cherry picked from commit 558ec5b87370727e42b7000ea5058754e50fad11)
Signed-off-by: Arthur Suzuki <arthur.suzuki@biblibre.com>