[seata-java] bugfix: error image when use null value as image query condition in insert on duplicate

[luky116]

refer: https://github.com/apache/incubator-seata/pull/5031

What happened:

What you expected to happen:

How to reproduce it (as minimally and precisely as possible):

Anything else we need to know?:

[qunqingrihe]

Please assign to me