fix(pro:search): mutiple search filed validation error #1475
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PR Checklist
Please check if your PR fulfills the following requirements:
What is the current behavior?
当searchField允许重复,即配置了multiple时,第一个之后的搜索项合法性判断不正确
例如:第一个关键字会校验非空,空的会被删除掉,第二个关键字没有校验
What is the new behavior?
修复以上问题
Other information