Fix/tablevis export

BUG:table vis export button - icons not working

Changes:

• Changed overflow from hidden to visible in buttons.module.scss
• Added new .exported class with translation transform

Pagination Component:

• Replaced icon-based navigation with custom SVG arrows
• Updated class names and structure for better responsiveness
• Modified display of items count with separate spans and semantic classes

Table Visualization

• Improved "Unique values" display with better styling and layout
• Added whitespace control and font styling classes
• Restructured DOM elements for better semantics
• Improved exportImage functionality with proper element cloning and cleanup