Fix iOS UIToolbar system appearance and Android vertical centering

Co-authored-by: haavamoa <2527084+haavamoa@users.noreply.github.com>

Author: Copilot

src/library/DIPS.Mobile.UI/Components/Toolbar/Android/ToolbarHandler.cs

@@ -31,13 +31,13 @@ protected override LinearLayout CreatePlatformView()
         border.SetBackgroundColor(Resources.Colors.Colors.GetColor(ColorName.color_border_default).ToPlatform());
         outer.AddView(border, new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MatchParent, borderPx));
 
-        // Buttons row: fills remaining space, centers buttons vertically (M3 spec: icons vertically centered in 80dp bar)
+        // Buttons row: fills remaining space with weight=1, centers buttons vertically
         m_buttonsLayout = new LinearLayout(Context)
         {
             Orientation = Orientation.Horizontal,
-            // Gravity = GravityFlags.CenterVertical, //Didnt work
         };
-        outer.AddView(m_buttonsLayout, new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MatchParent, ViewGroup.LayoutParams.MatchParent));
+        m_buttonsLayout.SetGravity(GravityFlags.CenterVertical);
+        outer.AddView(m_buttonsLayout, new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MatchParent, 0, 1f));
 
         return outer;
     }

src/library/DIPS.Mobile.UI/Components/Toolbar/iOS/ToolbarHandler.cs

@@ -9,10 +9,10 @@ public partial class ToolbarHandler : ViewHandler<Toolbar, UIToolbar>
 {
     protected override UIToolbar CreatePlatformView()
     {
-        var toolbar = new UIToolbar();
-        toolbar.BarTintColor = Resources.Colors.Colors.GetColor(ColorName.color_surface_default).ToPlatform();
-        toolbar.Translucent = false;
-        return toolbar;
+        // Use the default UIToolbar system appearance — do NOT set BarTintColor or Translucent = false,
+        // as that overrides the system-provided translucent material (Liquid Glass on iOS 26+,
+        // blurred translucent bar on earlier versions).
+        return new UIToolbar();
     }
 
     protected override void ConnectHandler(UIToolbar platformView)