Improves dashboard UI and user management

Enhances the dashboard's visual presentation and user management
functionality.

- Addresses a layout issue by adding overflow hidden to the word cloud container.
- Improves user management form responsiveness on smaller screens.
- Enhances language name display in the pie chart using a dedicated function and ensures correct ISO code display.
- Refines donut chart's center text styling for better readability.
- Fixes geographic map's height and removes attribution for a cleaner look.

components/GeographicMap.tsx

@@ -99,14 +99,13 @@ export default function GeographicMap({
   }
 
   return (
-    <div className="h-full w-full" style={{ height }}>
-      {Object.keys(countries).length > 0 ? (
-        <Map countryData={countryData} maxCount={maxCount} />
-      ) : (
-        <div className="h-full w-full bg-gray-100 flex items-center justify-center">
-          No geographic data available
-        </div>
-      )}
+    <div style={{ height: `${height}px`, width: "100%" }} className="relative">
+      <Map countryData={countryData} maxCount={maxCount} />
+      <style jsx global>{`
+        .leaflet-control-attribution {
+          display: none !important;
+        }
+      `}</style>
     </div>
   );
 }