[XSG] SetDynamciResource (#32323)

SetDynamicResource is an implicit interface implementation for
BindableObject. Cast it.

- fixes #32319

Author: StephaneDelcroix

src/Controls/src/SourceGen/SetPropertyHelpers.cs

@@ -184,7 +184,7 @@ static bool CanSetDynamicResource(IFieldSymbol? bpFieldSymbol, INode node, Sourc
 	}
 
 	static void SetDynamicResource(IndentedTextWriter writer, ILocalValue parentVar, IFieldSymbol fieldSymbol, INode valueNode, SourceGenContext context, NodeSGExtensions.GetNodeValueDelegate getNodeValue)
-		=> writer.WriteLine($"{parentVar.ValueAccessor}.SetDynamicResource({fieldSymbol.ToFQDisplayString()}, {(getNodeValue(valueNode, context.Compilation.ObjectType)).ValueAccessor}.Key);");
+		=> writer.WriteLine($"((global::Microsoft.Maui.Controls.Internals.IDynamicResourceHandler){parentVar.ValueAccessor}).SetDynamicResource({fieldSymbol.ToFQDisplayString()}, {(getNodeValue(valueNode, context.Compilation.ObjectType)).ValueAccessor}.Key);");
 
 	static bool CanConnectEvent(ILocalValue parentVar, string localName, INode valueNode, bool attached, SourceGenContext context)
 		//FIXME check event signature

src/Controls/tests/Xaml.UnitTests/Issues/Maui32319.xaml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+             x:Class="Microsoft.Maui.Controls.Xaml.UnitTests.Issues.Maui32319"
+             Title="Maui32319">
+    <ContentPage.Resources>
+        <GridLength x:Key="height">100</GridLength>
+    </ContentPage.Resources>
+    <Grid
+        x:Name="grid0">
+        <Grid.RowDefinitions>
+            <RowDefinition Height="14" />
+            <RowDefinition Height="60" />
+            <RowDefinition Height="{DynamicResource height}" />
+        </Grid.RowDefinitions>
+    </Grid>
+</ContentPage>

src/Controls/tests/Xaml.UnitTests/Issues/Maui32319.xaml.cs

@@ -0,0 +1,31 @@
+using Microsoft.Maui.ApplicationModel;
+using Microsoft.Maui.Controls.Core.UnitTests;
+using Microsoft.Maui.Dispatching;
+using Microsoft.Maui.UnitTests;
+using NUnit.Framework;
+
+namespace Microsoft.Maui.Controls.Xaml.UnitTests.Issues;
+
+public partial class Maui32319 : ContentPage
+{
+	public Maui32319() => InitializeComponent();
+
+	[TestFixture]
+	class Test
+	{
+		[SetUp]
+		public void Setup()
+		{
+			Application.SetCurrentApplication(new MockApplication());
+			DispatcherProvider.SetCurrent(new DispatcherProviderStub());
+		}
+
+		[TearDown] public void TearDown() => AppInfo.SetCurrent(null);
+
+		[Test]
+		public void DynamicResourceOnBO([Values] XamlInflator inflator)
+        {
+			Assert.DoesNotThrow(() =>  new Maui32319(inflator));
+        }
+	}
+}