旧com.alibaba.dubbo版本：2.5.9
新org.apache.dubbo版本：2.7.17

问题：旧的dubbo中设置过期时间放在字段default.timeout中，但是新的版本是在timeout中直接取值，会导致在旧的版本中设置的超时时间无效
![image](https://user-images.githubusercontent.com/41528403/197443590-266cb768-b499-4a72-9a26-a78937575ee0.png)
![image](https://user-images.githubusercontent.com/41528403/197443452-677a7f06-f0dc-484b-bc4a-4a9eb97d4b70.png)
这样的情况该如何兼容？

assertNull(url.getUsername());
        assertNull(url.getPassword());
        assertEquals("context", url.getHost());
        assertEquals(0, url.getPort());
        assertEquals("path", url.getPath());
        assertEquals(2, url.getParameters().size());
        assertEquals("1.0.0", url.getVersion());
        assertEquals("morgan", url.getParameter("application"));
    }
    private void assertURLStrDecoder(URL url) {
        String fullURLStr = url.toFullString();
        URL newUrl = URLStrParser.parseEncodedStr(URL.encode(fullURLStr));
        assertEquals(URL.valueOf(fullURLStr), newUrl);
        URL newUrl2 = URLStrParser.parseDecodedStr(fullURLStr);
        assertEquals(URL.valueOf(fullURLStr), newUrl2);
    }
    @Test
    void test_valueOf_noProtocol() throws Exception {
        URL url = URL.valueOf("10.20.130.230");
        assertURLStrDecoder(url);
        assertNull(url.getProtocol());
        assertNull(url.getUsername());
        assertNull(url.getPassword());
        assertEquals("10.20.130.230", url.getHost());
        assertEquals("10.20.130.230", url.getAddress());
        assertEquals(0, url.getPort());
        assertNull(url.getPath());
        assertEquals(0, url.getParameters().size());
        url = URL.valueOf("10.20.130.230:20880");
        assertURLStrDecoder(url);