Need to flag when fonts are not found on system

Figma allows users to select any google font.  Users need better warnings to tell them that they are using a font that it not local on their system.  

Even worse, when we replace the font in design studio, we still show the missing font name in the property editor.  Which is very confusing for users.  

We should have a warning icon next to the font property item to let the user know that the font is not local.