Fix: Added the ability to download files in the agent message reply function. (#11281)

### What problem does this PR solve?

Fix: Added the ability to download files in the agent message reply
function.

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

web/src/locales/en.ts

@@ -1009,6 +1009,8 @@ Example: general/v2/`,
       pleaseUploadAtLeastOneFile: 'Please upload at least one file',
     },
     flow: {
+      downloadFileTypeTip: 'The file type to download',
+      downloadFileType: 'Download file type',
       formatTypeError: 'Format or type error',
       variableNameMessage:
         'Variable name can only contain letters and underscores',

web/src/locales/zh.ts

@@ -956,6 +956,8 @@ General：实体和关系提取提示来自 GitHub - microsoft/graphrag：基于
       pleaseUploadAtLeastOneFile: '请上传至少一个文件',
     },
     flow: {
+      downloadFileTypeTip: '文件下载的类型',
+      downloadFileType: '文件类型',
       formatTypeError: '格式或类型错误',
       variableNameMessage: '名称只能包含字母和下划线',
       variableDescription: '变量的描述',