fix: Regression regarding AsyncValueGuard

Author: plammens

lib/src/widgets/async_value_guard.dart

@@ -71,7 +71,8 @@ class AsyncValueGuard<T> extends StatelessWidget {
             ],
           );
         } else {
-          return customLoadingWidget ?? sampleLoadingWidget;
+          customLoadingWidget ??
+              maybeWrapInSliver(Loading(sampleWidget: sampleLoadingWidget));
         }
       },
       skipLoadingOnReload: skipLoadingOnReload,

pubspec.yaml

@@ -15,7 +15,7 @@ publish_to: 'none' # Remove this line if you wish to publish to pub.dev
 # In iOS, build-name is used as CFBundleShortVersionString while build-number used as CFBundleVersion.
 # Read more about iOS versioning at
 # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
-version: 0.15.4
+version: 0.15.5
 
 environment:
   sdk: ^3.4.0