Facet Values Sort Order: Index should ignore casing

Index facet value sorting puts all values that start with a capital letter before all values that start with a lower case letter.

Since users often don't know this pattern, nor that the value they are looking for might start with a lower case letter, it leads to confusion and bad experiences, in particular in E-commerce with the 'Brand' Facet.

Desired behavior is that the order ignore case. If two values are otherwise equal (Patagonia,patagonia), put the capital first.

Example:
Current Order: Anon,Marmot,Patagonia,Smith,Zoot,maloja,prAna
Desired Order: Anon,Marmot,maloja,Patagonia,prAna,Smith,Zoot