fix: Fix `Backlinks` not applying the display class (#519)

Luca Salvarani

2023-10-02 c8f5dbbad3a85749d8a74f5e3e3b222fe547d5d6

 quartz/components/Explorer.tsx

@@ -86,7 +86,7 @@
  function Explorer({ allFiles, displayClass, fileData }: QuartzComponentProps) {
    constructFileTree(allFiles)
    return (
      <div class={`explorer ${displayClass}`}>
      <div class={`explorer ${displayClass ?? ""}`}>
        <button
          type="button"
          id="explorer"