When sorting search results alphabetically, the results are sorted case sensitive: A,B,C... first then a,b,c... Case should be ignored.

Steps to reproduce

• Apply the fix for #15423 and reindex
• Create objects starting with upper and lower case names
• Search for them, while sorting alphabetically: {set $search=fetch( ezfind, search, hash( query, $search_text, sort_by, hash( name, asc ) ) )}