checkRoleの判定を修正

src/contexts/AuthContext.tsx

@@ -95,7 +95,7 @@ function AuthContextProvider({ children }: Props) {
 
   const checkRole = (targetRole?: UserRole): boolean => {
     if (targetRole === undefined) return true;
-    return targetRole < role;
+    return targetRole <= role;
   };
 
   useEffect(() => {