[iOS][Regression] Fix ToolbarItem color when used with IconImageSource is always default color

src/Controls/src/Core/Compatibility/iOS/Extensions/ToolbarItemExtensions.cs

@@ -2,6 +2,7 @@
 using System;
 using System.ComponentModel;
 using CoreGraphics;
+using Microsoft.Maui.Graphics;
 using ObjCRuntime;
 using UIKit;
 using PointF = CoreGraphics.CGPoint;
@@ -108,6 +109,10 @@ void UpdateIconAndStyle(ToolbarItem item)
 					{
 						Image = result?.Value;
 						Style = UIBarButtonItemStyle.Plain;
+						if (item.IconImageSource is FontImageSource fontImageSource && fontImageSource.Color is not null)
+						{
+							TintColor = fontImageSource.Color.ToPlatform();
+						}
 					});
 				}
 			}

src/Controls/tests/TestCases.HostApp/Issues/Issue25912.xaml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<controls:TestContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+			 xmlns:controls="clr-namespace:Maui.Controls.Sample.Issues"
+             x:Class="Maui.Controls.Sample.Issues.Issue25912MainPage">
+
+			 <ContentPage.ToolbarItems>
+				<ToolbarItem x:Name="toolbarItem" IconImageSource="{FontImage Glyph='+',Color=Red,Size=30}"/>
+			 </ContentPage.ToolbarItems>
+
+
+			 <ContentPage.Content>
+				<Label Text="ToolbarItemIconColorTest" AutomationId="Label"/>
+			 </ContentPage.Content>
+
+</controls:TestContentPage>

src/Controls/tests/TestCases.HostApp/Issues/Issue25912.xaml.cs

@@ -0,0 +1,26 @@
+namespace Maui.Controls.Sample.Issues
+{
+	[XamlCompilation(XamlCompilationOptions.Compile)]
+[Issue(IssueTracker.Github, 25912, "ToolbarItem color when used with IconImageSource is always white", PlatformAffected.iOS | PlatformAffected.macOS)]
+		public class Issue25912 : NavigationPage
+	{
+		public Issue25912()
+		{
+			Navigation.PushAsync(new Issue25912MainPage());
+		}
+	}
+
+	public partial class Issue25912MainPage : TestContentPage
+	{
+
+		public Issue25912MainPage()
+		{
+			InitializeComponent();
+		}
+
+		protected override void Init()
+		{
+		}
+
+	}
+}

src/Controls/tests/TestCases.Shared.Tests/Tests/Issues/Issue25912.cs

@@ -0,0 +1,28 @@
+#if TEST_FAILS_ON_WINDOWS    //The images generated from the CI do not display the toolbar on the Windows platform. However, the icon color issue does not exist on Windows. Therefore, the test is restricted to exclude the Windows platform.
+using NUnit.Framework;
+using NUnit.Framework.Legacy;
+using OpenQA.Selenium;
+using UITest.Appium;
+using UITest.Core;
+
+namespace Microsoft.Maui.TestCases.Tests.Issues
+{
+	public class Issue25912 : _IssuesUITest
+	{
+		public Issue25912(TestDevice device) : base(device)
+		{
+		}
+
+		public override string Issue => "ToolbarItem color when used with IconImageSource is always white";
+
+		[Test]
+		[Category(UITestCategories.ToolbarItem)]
+		public void VerifyToolbarItemIconColor()
+		{
+			App.WaitForElement("Label");
+			VerifyScreenshot();
+		}
+
+	}
+}
+#endif