流程预审选人增加配置项

https://e.gitee.com/gdyditc/projects/725584/tasks/table?issue=IBLALD

src/components/SecondDev/OpinionDialog.vue

@@ -13,7 +13,7 @@
                     <a-form-item v-if="_action === 'agree' && !isEnd" :label="flowNextNodes.length > 1 ? node.activityName + '审批人' : '审批人'">
                         <a-select v-show="node.chooseAssign" v-model:value="node.assignees" :options="node.nextAssignees"
                                   :placeholder="'请选择' + node.activityName + '的审批人'" max-tag-count="responsive" 
-                                  :mode="node.isChooseMulti==false? 'multiple' : ''"
+                                  :mode="node.isChooseMulti==true? 'multiple' : ''"
                                   :filterOption="search"
                         ></a-select>
                         </template>

src/views/workflow/design/bpmn/components/ApproveRules.vue

@@ -79,15 +79,15 @@
     noHandler: Number || String || Boolean,
     isPrevChooseNext: Number || String || Boolean,
     isChooseMulti: {
-      type: Boolean || undefined,
+      type: Boolean,
       default: true,
     },
     isChooseAll: {
-      type: Boolean || undefined,
+      type: Boolean,
       default: false,
     },
     isReadOnly: {
-      type: Boolean || undefined,
+      type: Boolean,
       default: false,
     },
     provisionalApprover: {