feat: add a controlText function to MenuButton (#4125)

src/js/menu/menu-button.js

@@ -176,6 +176,24 @@ class MenuButton extends Component {
     return `vjs-menu-button ${menuButtonClass} ${super.buildCSSClass()}`;
   }
 
+  /**
+   * Get or set the localized control text that will be used for accessibility.
+   *
+   * > NOTE: This will come from the internal `menuButton_` element.
+   *
+   * @param {string} [text]
+   *        Control text for element.
+   *
+   * @param {Element} [el=this.menuButton_.el()]
+   *        Element to set the title on.
+   *
+   * @return {string}
+   *         - The control text when getting
+   */
+  controlText(text, el = this.menuButton_.el()) {
+    return this.menuButton_.controlText(text, el);
+  }
+
   /**
    * Handle a click on a `MenuButton`.
    * See {@link ClickableComponent#handleClick} for instances where this is called.