remove unused code

lib/src/screens/base_page.dart

@@ -35,8 +35,6 @@ abstract class BasePage extends StatelessWidget {
 
   Widget? get endDrawer => null;
 
-  PreferredSizeWidget? desktopAppBar(BuildContext context) => null; 
-
   AppBarStyle get appBarStyle => AppBarStyle.regular;
 
   Widget Function(BuildContext, Widget)? get rootWrapper => null;
@@ -152,7 +150,7 @@ abstract class BasePage extends StatelessWidget {
         resizeToAvoidBottomInset: resizeToAvoidBottomInset,
         extendBodyBehindAppBar: extendBodyBehindAppBar,
         endDrawer: endDrawer,
-        appBar: desktopAppBar(context) ?? appBar(context),
+        appBar: appBar(context),
         body: body(context),
         floatingActionButton: floatingActionButton(context));
 

lib/src/screens/dashboard/desktop_widgets/desktop_dashboard_navbar.dart

@@ -1,14 +1,15 @@
 import 'package:cake_wallet/di.dart';
 import 'package:cake_wallet/store/settings_store.dart';
 import 'package:cake_wallet/themes/theme_base.dart';
+import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 
-class DesktopNavbar extends StatelessWidget implements PreferredSizeWidget {
+class DesktopDashboardNavbar extends StatelessWidget implements ObstructingPreferredSizeWidget {
   final Widget leading;
   final Widget middle;
   final Widget trailing;
 
-  DesktopNavbar({
+  DesktopDashboardNavbar({
     super.key,
     required this.leading,
     required this.middle,
@@ -41,4 +42,7 @@ class DesktopNavbar extends StatelessWidget implements PreferredSizeWidget {
 
   @override
   Size get preferredSize => Size.fromHeight(60);
+  
+  @override
+  bool shouldFullyObstruct(BuildContext context) => false;
 }

lib/src/screens/dashboard/desktop_widgets/desktop_sidebar_wrapper.dart

@@ -2,13 +2,14 @@ import 'package:cake_wallet/di.dart';
 import 'package:cake_wallet/routes.dart';
 import 'package:cake_wallet/src/screens/dashboard/desktop_dashboard_page.dart';
 import 'package:cake_wallet/src/screens/base_page.dart';
+import 'package:cake_wallet/src/screens/dashboard/desktop_widgets/desktop_dashboard_navbar.dart';
 import 'package:cake_wallet/src/screens/dashboard/desktop_widgets/desktop_sidebar/side_menu.dart';
 import 'package:cake_wallet/src/screens/dashboard/desktop_widgets/desktop_sidebar/side_menu_item.dart';
 import 'package:cake_wallet/src/screens/dashboard/desktop_widgets/desktop_wallet_selection_dropdown.dart';
 import 'package:cake_wallet/src/screens/dashboard/widgets/sync_indicator.dart';
-import 'package:cake_wallet/src/widgets/desktop_nav_bar.dart';
 import 'package:cake_wallet/view_model/dashboard/dashboard_view_model.dart';
 import 'package:cake_wallet/view_model/dashboard/desktop_sidebar_view_model.dart';
+import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_mobx/flutter_mobx.dart';
 import 'package:cake_wallet/router.dart' as Router;
@@ -28,7 +29,7 @@ class DesktopSidebarWrapper extends BasePage {
   static Key _pageViewKey = GlobalKey();
 
   @override
-  PreferredSizeWidget desktopAppBar(BuildContext context) => DesktopNavbar(
+  ObstructingPreferredSizeWidget appBar(BuildContext context) => DesktopDashboardNavbar(
         leading: Padding(
           padding: EdgeInsets.only(left: sideMenuWidth),
           child: getIt<DesktopWalletSelectionDropDown>(),
@@ -80,23 +81,6 @@ class DesktopSidebarWrapper extends BasePage {
 
   double get sideMenuWidth => 76.0;
 
-  @override
-  Widget Function(BuildContext, Widget) get rootWrapper =>
-      (BuildContext context, Widget scaffold) => Container(
-            decoration: BoxDecoration(
-              gradient: LinearGradient(
-                colors: [
-                  Theme.of(context).accentColor,
-                  Theme.of(context).scaffoldBackgroundColor,
-                  Theme.of(context).primaryColor,
-                ],
-                begin: Alignment.topRight,
-                end: Alignment.bottomLeft,
-              ),
-            ),
-            child: scaffold,
-          );
-
   @override
   Widget body(BuildContext context) {
     _setEffects();

lib/src/widgets/nav_bar.dart

@@ -1,7 +1,7 @@
 import 'package:flutter/cupertino.dart';
 
 class NavBar extends StatelessWidget implements ObstructingPreferredSizeWidget {
-  factory NavBar({Widget? leading, Widget? middle, Widget? trailing, bool useDesktopAppbar = false, Color? backgroundColor,}) {
+  factory NavBar({Widget? leading, Widget? middle, Widget? trailing, Color? backgroundColor}) {
     return NavBar._internal(
         leading: leading,
         middle: middle,
@@ -11,7 +11,7 @@ class NavBar extends StatelessWidget implements ObstructingPreferredSizeWidget {
   }
 
   factory NavBar.withShadow(
-      {Widget? leading, Widget? middle, Widget? trailing, Color? backgroundColor, bool useDesktopAppbar = false,}) {
+      {Widget? leading, Widget? middle, Widget? trailing, Color? backgroundColor}) {
     return NavBar._internal(
       leading: leading,
       middle: middle,