Improve the readability of the getOrder method (#9361)

`Ordered.LOWEST_PRECEDENCE + 1` is equal to `Ordered.HIGHEST_PRECEDENCE`, using `Ordered.HIGHEST_PRECEDENCE` is more readable.

Author: tianshuang

dubbo-config/dubbo-config-spring/src/main/java/org/apache/dubbo/config/spring/beans/factory/config/DubboConfigDefaultPropertyValueBeanPostProcessor.java

@@ -110,6 +110,6 @@ protected void setBeanNameAsDefaultValue(Object bean, String propertyName, Strin
  */
  @Override
  public int getOrder() {
- return Ordered.LOWEST_PRECEDENCE + 1;
+ return Ordered.HIGHEST_PRECEDENCE;
  }
 }