### What problem does this PR solve?
Fix: The files in the knowledge base folder on the file management page
should not be deleted #9975
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
Fix: Optimize table style
-Modify the style of the table scrollbar and remove unnecessary
scrollbars
-Adjust the header style of the table, add background color and
hierarchy
-Optimize the style of datasets and file tables
-Add a new background color variable
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
Feat: Adjust the operation cell of the table on the file management page
and dataset page #3221.
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Feat: Bind data to the agent module of the home page #3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Feat: Deleting files in batches. #3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Feat: Rename document name #3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Feat: Add LinkToDatasetDialog #3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
