feat(explorer): improve accessibility and consistency (+ bug fix) (#488)

Ben Schlegel

2023-09-20 b029eeadabe0877df6ec11443c68743f1494bc40

 quartz/components/Explorer.tsx

@@ -79,7 +79,7 @@
          data-savestate={opts.useSavedState}
          data-tree={jsonTree}
        >
          <h3>{opts.title}</h3>
          <h1>{opts.title}</h1>
          <svg
            xmlns="http://www.w3.org/2000/svg"
            width="14"
@@ -98,7 +98,7 @@
        <div id="explorer-content">
          <ul class="overflow" id="explorer-ul">
            <ExplorerNode node={fileTree} opts={opts} fileData={fileData} />
            <div id="explorer-end" />
            <li id="explorer-end" />
          </ul>
        </div>
      </div>