chore(mobile): small visual fix and update (#17547)

* chore(mobile): small visual fix and update

* update

* update

* remove design placeholder

mobile/lib/theme/theme_data.dart

@@ -163,6 +163,13 @@ ThemeData getThemeData({
       ),
     ),
     dialogTheme: DialogThemeData(backgroundColor: colorScheme.surfaceContainer),
+    progressIndicatorTheme: const ProgressIndicatorThemeData(
+      // ignore: deprecated_member_use
+      year2023: false,
+      // TODO: Uncommented after upgrade to version later than 3.29.2
+      // circularTrackColor: Colors.black12,
+      trackGap: 3,
+    ),
   );
 }