Implement the dynamic update for language-specific filters

### Issue Details

There is no dynamic update of the list of available language-specific filters in the 4.0 app.

### Proposed solution

Add dynamic update of the list of available language-specific filters.

This list must be updated dynamically.

### Alternative solution

_No response_

The issue names no files, tests, or entry points. Start by locating the 4.0 app's language-specific filter list and how its available filters are currently populated; done means the list updates dynamically as supported filters change, matching the requested behavior shown in the issue.

Do mô hình lập chỉ mục viết ra từ nội dung của issue.