fix: defaultFlowId由后端生成

yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/controller/admin/definition/vo/model/simple/BpmSimpleModelNodeVO.java

@@ -119,7 +119,6 @@ public class BpmSimpleModelNodeVO {
     @Schema(description = "路由分支组", example = "[]")
     private List<RouteCondition> routerGroups;
 
-    // TODO @lesan：这个目前前端是随机生成的。可以后端来随机么？
     @Schema(description = "默认分支 ID", example = "Flow_xxx")
     private String defaultFlowId; // 仅用于路由分支节点 BpmSimpleModelNodeType.ROUTE_BRANCH_NODE
 

yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/util/SimpleModelUtils.java

@@ -728,6 +728,7 @@ public class SimpleModelUtils {
             exclusiveGateway.setId(node.getId());
 
             // 设置默认的序列流（条件）
+            node.setDefaultFlowId("Flow_" + IdUtil.fastUUID());
             exclusiveGateway.setDefaultFlow(node.getDefaultFlowId());
             return exclusiveGateway;
         }