Improvements added clients list

lib/screens/clients/added_list.dart

@@ -171,9 +171,7 @@ class _AddedListState extends State<AddedList> {
       );
     }
 
-    return Stack(
-      children: [
-        CustomTabContentList(
+    return CustomTabContentList(
       loadingGenerator: () => SizedBox(
         width: double.maxFinite,
         height: MediaQuery.of(context).size.height-171,
@@ -322,12 +320,9 @@ class _AddedListState extends State<AddedList> {
         ),
       ), 
       loadStatus: widget.loadStatus, 
-          onRefresh: widget.fetchClients
-        ),
-        ClientsFab(
-          isVisible: isVisible,
-        )
-      ],
+      onRefresh: widget.fetchClients,
+      fab: const ClientsFab(),
+      fabVisible: isVisible,
     );
   }
 }

lib/screens/clients/fab.dart

@@ -14,12 +14,7 @@ import 'package:adguard_home_manager/providers/servers_provider.dart';
 import 'package:adguard_home_manager/providers/app_config_provider.dart';
 
 class ClientsFab extends StatelessWidget {
-  final bool isVisible;
-
-  const ClientsFab({
-    Key? key,
-    required this.isVisible
-  }) : super(key: key);
+  const ClientsFab({Key? key}) : super(key: key);
 
   @override
   Widget build(BuildContext context) {
@@ -67,18 +62,9 @@ class ClientsFab extends StatelessWidget {
       ));
     }
 
-    return AnimatedPositioned(
-      duration: const Duration(milliseconds: 100),
-      curve: Curves.easeInOut,
-      bottom: isVisible ?
-        appConfigProvider.showingSnackbar
-          ? 70 : 20
-        : -70,
-      right: 20,
-      child: FloatingActionButton(
+    return FloatingActionButton(
       onPressed: openAddClient,
       child: const Icon(Icons.add),
-      )
     );
   }
 }