Filters the Social Media Icons widget output.

Fires at the end of the list of Social Media accounts. Can be used to add a new Social Media Site to the Social Media Icons Widget. The filter function passed the array of HTML entries that will be sorted by key, each wrapped in a list item element and output as an unsorted list.

Fires for each profile link in the social icons widget. Can be used to change the links for certain social networks if needed. All URLs will be passed through `esc_attr` on output.