fix: UITextDisplayer font-family is overridden by UI's Roboto font (#…

…5829)

Fixes #5827

lib/text/ui_text_displayer.js

@@ -600,6 +600,10 @@ shaka.text.UITextDisplayer = class {
           // Only do this for the text itself.
           elem.style.backgroundColor = 'rgba(0, 0, 0, 0.8)';
         }
+        const fontFamily = inherit((c) => c.fontFamily);
+        if (fontFamily) {
+          elem.style.fontFamily = fontFamily;
+        }
       }
       if (text) {
         elem.textContent = text;