fix: Improve dPad navigation buttons (#605)

lib/widgets/navigation_scaffold/components/adaptive_fab.dart

@@ -3,23 +3,37 @@ import 'package:flutter/material.dart';
 class AdaptiveFab {
   final BuildContext context;
   final String title;
+  final String? heroTag;
   final Widget child;
   final Function() onPressed;
+  final Color? backgroundColor;
   final Key? key;
   AdaptiveFab({
     required this.context,
     this.title = '',
+    this.heroTag,
     required this.child,
     required this.onPressed,
     this.key,
+    this.backgroundColor,
   });
 
-  FloatingActionButton get normal {
-    return FloatingActionButton(
-      key: key,
-      onPressed: onPressed,
-      tooltip: title,
-      child: child,
+  Widget get normal {
+    return Hero(
+      tag: heroTag ?? UniqueKey(),
+      child: IconButton.filledTonal(
+        iconSize: 26,
+        key: key,
+        tooltip: title,
+        onPressed: onPressed,
+        style: IconButton.styleFrom(
+          backgroundColor: backgroundColor,
+        ),
+        icon: Padding(
+          padding: const EdgeInsets.all(8.0),
+          child: child,
+        ),
+      ),
     );
   }
 
@@ -34,6 +48,7 @@ class AdaptiveFab {
           onPressed: onPressed,
           style: FilledButton.styleFrom(
             padding: const EdgeInsets.all(16),
+            backgroundColor: backgroundColor,
           ),
           child: Row(
             spacing: 16,