Sub-categories first in Composer category selector

Development
12

Cracked it:

In 3.1 It’s

#reply-control .category-input .category-chooser .selected-name .name {
    & > .badge-wrapper:first-child {
        display: none;
    }

    & > .badge-wrapper:last-child {
        display: unset;
    }
}

Thanks for your help everyone!