wp_list_authors does not use feed_type

[MikeHansenMe]

When you call wp_list_authors with feed_type arg it is never accounted for in the function. I found this while writing some unit tests. I also came across another issue with count but I can only reproduce in unit test and not my test site.

[MikeHansenMe]

passes feed_type variable to get_author_feed_link

[MikeHansenMe]

Unit tests for wp_list_authors

[MikeHansenMe]

better function names and added this ticket number to test that fails

[MikeHansenMe]

Added another ticket number

[nacin]

Thanks Mike! Looks good.

[nacin]

In 27550:

Pass feed_type arg in wp_list_authors() to get_author_feed_link().

Adds a slate of tests for wp_list_authors().

props MikeHansenMe.
fixes #26538.