Web: Fixed the download and preview file not authorized. (#3652)

https://github.com/infiniflow/ragflow/issues/3651

### What problem does this PR solve?

_Briefly describe what this PR aims to solve. Include background context
that will help reviewers understand the purpose of the PR._

### Type of change

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

web/src/services/file-manager-service.ts

@@ -45,11 +45,16 @@ const methods = {
     url: connectFileToKnowledge,
     method: 'post',
   },
-  getDocumentFile: {
+  getFile: {
     url: getFile,
     method: 'get',
     responseType: 'blob',
   },
+  getDocumentFile: {
+    url: get_document_file,
+    method: 'get',
+    responseType: 'blob',
+  },
   moveFile: {
     url: moveFile,
     method: 'post',