message: In the Command Palette, prevent the tab key from moving the focus.
diff: @@ -215,6 +215,12 @@ export class PopDownListPicker<T extends { id: string; }> extends ThemeableEleme
  return;
  }
  + if (ev.key === "Tab") {
  + ev.preventDefault();
  + ev.stopPropagation();
  + return;
  + }
  +
  const isPageKey = ev.key === "PageUp" || ev.key === "PageDown";
  const isUp = ev.key === "PageUp" || ev.key === "ArrowUp" || ev.key === "Home";
  