### What problem does this PR solve?
Feat: Users can chat directly without first creating a conversation.
#11768
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Feat: Files uploaded via the dialog box can be uploaded without binding
to a dataset. #9590
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Feat: Delete useless knowledge base, chat, and search files. #10427
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Fix: When I click to interrupt the chat, the page reports an error
#10553
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
Feat: Create a conversation before uploading files #3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Fix: Delete the uploaded file in the chat input box, the corresponding
file ID is not deleted #9701
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
Feat: Add metadata configuration for new chats #3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Feat: Upload files in the chat box #3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
