Bug 26009: Add facet size to home/holdingbranch

Bug 26009: Add facet size to home/holdingbranch

To test:
0 - Set DisplayLibraryFacets to 'both' and FacetMaxCount to 20
1 - Have more than 10 branches
2 - Have items in each of those branches
3 - Enable ES, set system preference SearchEngine to Elasticsearch
4 - Search for '*'
5 - Expand homebranch/holdingbranch facets
6 - Note you only get 10
7 - Apply patch
8 - Repeat search
9 - Now you get all your facets

Signed-off-by: Michael Springer <mspringer@mylakelibrary.org>
Signed-off-by: Josef Moravec <josef.moravec@gmail.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>