message: Fix the issue when prompt-decoration would not be visible.
diff: }
  .session .prompt:before {
  + z-index: 2; /* Without this left pane prompt overlaps right pane prompt. */
  grid-area: prompt-decoration;
  filter: brightness(50%);
  }
  }
  .session .prompt[data-mode=history-search] .suggest-widget {
  - width: 800px !important;
  + width: 600px !important;
  }
  /* A workaround for https://github.com/Microsoft/monaco-editor/issues/434 */
  