Infinity api call due to importing of wrong file

Description:

In the manage - > workspace -> import -> import new file -> import file type select as slacks user csv -> then upload a pdf which is wrong and it is giving error but in the network section of browser you can see the endpoint (api/v1/getImportFileData) is calling unlimited time.

api response is like this -

{"waiting":true,"success":true}

Steps to reproduce:

1. Go to manage
2. Click on workspace
3. Go to Import
4. Click on Import new File button
5. Select import file type as slacks user csv
6. Select File type as upload
7. Select a pdf file
8. Then click on import
9. Open the network tab
10. You can see getImportFileData is calling again and again

Expected behavior:

If a user is selecting a wrong file it should prevent it and only one time getImportFileData api should call .

Actual behavior:

After user is selecting a wrong file it is preventing the file but network request is making again and again.

Server Setup Information:

• Version of Rocket.Chat Server: 8.1.0-develop
• License Type:
• Number of Users:
• Operating System: ubantu 24 LTS wsl
• Deployment Method:
• Number of Running Instances:
• DB Replicaset Oplog:
• NodeJS Version: 22.18.0 - x64
• MongoDB Version:7.0.16

Client Setup Information

• Desktop App or Browser Version: Browser Version
• Operating System:Linux

Additional context

I am attaching a screenshot for reference .

Start by reproducing the workspace import flow with a PDF selected for the Slacks user CSV option, then inspect the getImportFileData network requests and the import entry point. Trace why the waiting response causes repeated calls after the invalid file is rejected. Done means the invalid file is prevented and getImportFileData is requested only once.