TBIO-4293: add aria invalid for the font stepper
TBIO-4293: add aria invalid for the font stepper

FernCreek/tinymce,TeamupCom/tinymce,FernCreek/tinymce,tinymce/tinymce,tinymce/tinymce,FernCreek/tinymce,TeamupCom/tinymce,tinymce/tinymce