[FEATURE]

### 请描述您的需求或者改进建议
*对您想要需求或建议的清晰简洁的描述。*
已有的objectReader获取逻辑是先获取默认的reader，如果获取到了就直接返回，而不再获取用户自定义的reader，这样导致无法对有默认reader的类型，再自定义reader，为啥要这样做？能不能把用户自定义的reader提到默认reader前面。

public ObjectReader getObjectReader(JSONReader jsonReader) {
if (initReader != null) {
return initReader;
}

if (reader != null) {
return reader;
}

ObjectReader formattedObjectReader = createFormattedObjectReader(fieldType, fieldClass, format, locale);
if (formattedObjectReader != null) {
return reader = formattedObjectReader;
}

if (fieldClass != null && Map.class.isAssignableFrom(fieldClass)) {
return reader = ObjectReaderImplMap.of(fieldType, fieldClass, features);
} else if (fieldClass != null && Collection.class.isAssignableFrom(fieldClass)) {
return reader = ObjectReaderImplList.of(fieldType, fieldClass, features);
}

return reader = jsonReader.getObjectReader(fieldType);
}

### 请描述你建议的实现方案
*对您想要需求或建议的实现方案的详细描述。*

### 描述您考虑过的替代方案
*对您考虑过的任何替代解决方案或功能的描述。*

#### 附加信息
*如果你还有其他需要提供的信息，可以在这里填写（可以提供截图、视频等）。*

Start with ObjectReader.getObjectReader(JSONReader jsonReader) and trace the existing reader-resolution order, including createFormattedObjectReader and jsonReader.getObjectReader(fieldType). Verify how user-defined readers are represented and selected. Done means a user-defined reader takes precedence over the default reader for types that already have one, without breaking formatted, map, or collection readers.

Written by the indexing model from the issue text.