fix: 添加组下拉框添加clearable属性

src/components/SimpleProcessDesignerV2/src/nodes-config/components/Condition.vue

@@ -12,7 +12,10 @@
         </el-radio>
       </el-radio-group>
     </el-form-item>
-    <el-form-item v-if="condition.conditionType === ConditionType.RULE && condition.conditionGroups" label="条件规则">
+    <el-form-item
+      v-if="condition.conditionType === ConditionType.RULE && condition.conditionGroups"
+      label="条件规则"
+    >
       <div class="condition-group-tool">
         <div class="flex items-center">
           <div class="mr-4">条件组关系</div>
@@ -67,7 +70,7 @@
                   trigger: 'change'
                 }"
               >
-                <el-select style="width: 160px" v-model="rule.leftSide">
+                <el-select style="width: 160px" v-model="rule.leftSide" clearable>
                   <el-option
                     v-for="(field, fIdx) in fieldOptions"
                     :key="fIdx"