fix(approve): 修复审批流程为空时的异常处理

liyong

2026-04-30 c2ad2126d6f8423e0a5e6e20bbb91ef6bb1cffc0

 src/main/java/com/ruoyi/production/dto/ProcessRouteDto.java

@@ -13,4 +13,6 @@

    @ApiModelProperty("规格")
    private String model;

    private String bomNo;
}