chore: Apply style to storage usage on backup creation

lib/ui/pages/backups/create_backups_modal.dart

@@ -120,6 +120,7 @@ class _CreateBackupsModalState extends State<CreateBackupsModal> {
                           .displayName,
                     },
                   ),
+                  style: Theme.of(context).textTheme.labelMedium,
                 ),
               );
               descriptionWidgets.add(