fix(search): null checks and focus fixes

Jacky Zhao

2024-02-02 0a3379a8530f365e2bd85e8ea20a1dfc8126c39c

 quartz/components/styles/legacyToc.scss

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

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