fix: don't allow binding text to images (#6693)

src/element/typeChecks.ts

@@ -126,7 +126,6 @@ export const isTextBindableContainer = (
     (element.type === "rectangle" ||
       element.type === "diamond" ||
       element.type === "ellipse" ||
-      element.type === "image" ||
       isArrowElement(element))
   );
 };