feat(users): implement role filtering and pagination in user management

- Add role filtering functionality with radio buttons for each role
- Implement pagination controls at the bottom of the user table
- Update user table to show loading state without text
- Improve avatar display logic with conditional rendering
- Adjust styling for better UI consistency and responsiveness
- Remove unused sidebar state imports and commented-out code
- Add console logs for debugging data flow and role changes
- Modify search button size from sm to xs for better fit
- Enhance role badge styling with margin adjustments
- Refactor sidebar overlay and positioning classes

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