优化选择数据逻辑，仅保留具有子项的行以便于删除操作

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2026-04-22 fa4a8a332b2b60b7b94b1f763091c1daf8927710

 src/views/productionManagement/productStructure/index.vue

@@ -34,8 +34,8 @@
        </el-form-item>
      </el-form>
      <template #footer>
        <el-button @click="closeDialog">取消</el-button>
        <el-button type="primary" @click="handleSubmit">确定</el-button>
        <el-button @click="closeDialog">取消</el-button>
      </template>
    </el-dialog>