upgrade: new version syntax

lib/common/widgets/http_error.dart

@@ -34,7 +34,7 @@ class HttpError extends StatelessWidget {
                 fn!();
               },
               style: ButtonStyle(
-                backgroundColor: MaterialStateProperty.resolveWith((states) {
+                backgroundColor: WidgetStateProperty.resolveWith((states) {
                   return Theme.of(context).colorScheme.primary.withAlpha(20);
                 }),
               ),

lib/common/widgets/video_card_h.dart

@@ -305,7 +305,7 @@ class VideoContent extends StatelessWidget {
                 if (source == 'later') ...[
                   IconButton(
                     style: ButtonStyle(
-                      padding: MaterialStateProperty.all(EdgeInsets.zero),
+                      padding: WidgetStateProperty.all(EdgeInsets.zero),
                     ),
                     onPressed: () => onPressedFn?.call(),
                     icon: Icon(