refactor: DCM - const border radius, constructor & switch expressions (#19515)

* enable border radius, switch exp, const constructor

* regenerate provider

* more formatting

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Co-authored-by: shenlong-tanwen <139912620+shalong-tanwen@users.noreply.github.com>

mobile/lib/providers/image/cache/image_loader.dart

@@ -42,6 +42,6 @@ class ImageLoader {
     }
 
     // If we get here, the image failed to load from the cache stream
-    throw ImageLoadingException('Could not load image from stream');
+    throw const ImageLoadingException('Could not load image from stream');
   }
 }