Disable mute button if media is not yet available. (#1218)

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Signed-off-by: Timo K <toger5@hotmail.de>

src/button/Button.tsx

@@ -77,6 +77,7 @@ interface Props {
   children: Element[];
   onPress: (e: PressEvent) => void;
   onPressStart: (e: PressEvent) => void;
+  disabled: boolean;
   // TODO: add all props for <Button>
   [index: string]: unknown;
 }