feat: 上位タグのバグ修正（#174） (#175)

#174 エラー回避と誤記修正

#174 完了

Co-authored-by: miteruzo <miteruzo@naver.com>
Reviewed-on: #175

frontend/src/components/TagDetailSidebar.tsx

@@ -27,7 +27,9 @@ const renderTagTree = (
       </li>)
 
   return [self,
-	  ...(tag.children?.flatMap (child => renderTagTree (child, nestLevel + 1, key)) ?? [])]
+	  ...(tag.children
+	      ?.sort ((a, b) => a.name < b.name ? -1 : 1)
+	      .flatMap (child => renderTagTree (child, nestLevel + 1, key)) ?? [])]
 }