message: fix(theme): fix issues in sidebarSorter
diff: @@ -96,6 +96,7 @@ const getInfo = (
  type: "file",
  path: filename,
  title: page.frontmatter.shortTitle || page.title,
  + frontmatter: page.frontmatter,
  order:
  "order" in page.frontmatter ? page.frontmatter.order : null,
  }
  