test: enhance list endpoint e2e test

[EiffelFly]

Context

Currently, we have this kind of test to test the list endpoint

check(http.request("GET", `${API_HOST}/tags`, undefined, { headers }), {
      "listTag - GET /tags - have two tags, should response 200": (r) =>
        r.status === 200,
      "listTag - GET /tags - have two tags, should response size=2": (r) =>
        r.json().size === "2",
    });

Sadly, it will have chance to get polluted by other testing, we may need to find better way to solve it.