Feat: If a query variable in a data manipulation operator is deleted, a warning message should be displayed to the user. #10427 #11255 (#11384)

### What problem does this PR solve?

Feat: If a query variable in a data manipulation operator is deleted, a
warning message should be displayed to the user. #10427 #11255

### Type of change


- [x] New Feature (non-breaking change which adds functionality)

web/src/locales/en.ts

@@ -1646,6 +1646,7 @@ The variable aggregation node (originally the variable assignment node) is a cru
       beginInputTip:
         'By defining input parameters, this content can be accessed by other components in subsequent processes.',
       query: 'Query variables',
+      queryRequired: 'Query is required',
       queryTip: 'Select the variable you want to use',
       agent: 'Agent',
       addAgent: 'Add Agent',

web/src/locales/zh.ts

@@ -1549,6 +1549,7 @@ General：实体和关系提取提示来自 GitHub - microsoft/graphrag：基于
       task: '任务',
       beginInputTip: '通过定义输入参数，此内容可以被后续流程中的其他组件访问。',
       query: '查询变量',
+      queryRequired: '查询变量是必填项',
       queryTip: '选择您想要使用的变量',
       agent: '智能体',
       addAgent: '添加智能体',