feat: enhance UI components with new border radius and tooltip features

- Added new border radius options (2xl, 3xl) in Tailwind configuration and globals.css.
- Integrated Tooltip component in ChatShareButton and ModelSelector for improved user experience.
- Updated button styles for consistency across components, including NotificationButton and ModelSelector.
- Minor text adjustments for clarity in SourceDetailPanel.

surfsense_web/tailwind.config.js

@@ -52,6 +52,9 @@ module.exports = {
 				},
 			},
 			borderRadius: {
+				"3xl": "calc(var(--radius) + 12px)",
+				"2xl": "calc(var(--radius) + 8px)",
+				xl: "calc(var(--radius) + 4px)",
 				lg: "var(--radius)",
 				md: "calc(var(--radius) - 2px)",
 				sm: "calc(var(--radius) - 4px)",