Fix an issue with GfAppBar & GfCard support on Flutter 3.35

Author: artem.abramov

lib/components/appbar/gf_appbar.dart

@@ -304,7 +304,7 @@ class _GFAppBarState extends State<GFAppBar> {
     assert(!widget.primary || debugCheckHasMediaQuery(context));
     assert(debugCheckHasMaterialLocalizations(context));
     final ThemeData theme = Theme.of(context);
-    final AppBarTheme appBarTheme = AppBarTheme.of(context);
+    final appBarTheme = AppBarTheme.of(context);
     final ScaffoldState scaffold = Scaffold.of(context);
     final ModalRoute<dynamic>? parentRoute = ModalRoute.of(context);
     final bool hasDrawer = scaffold.hasDrawer;

lib/components/card/gf_card.dart

@@ -115,7 +115,7 @@ class GFCard extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    final CardThemeData cardTheme = CardTheme.of(context);
+    final cardTheme = CardTheme.of(context);
 
     final Widget cardChild = Padding(
       padding: padding,