feat(backlinks): hide by default when empty (#1674)

Anton Bulakh

2024-12-27 05e6f05a5067ca1e6f5d5f793353182d8804c860

 quartz/components/styles/legacyToc.scss

@@ -12,7 +12,7 @@
      margin: 0;
    }
  }
    

  & ul {
    list-style: none;
    margin: 0.5rem 1.25rem;