fix: Change property syntax from colon to equals in Sample attributes

Fixed CS1739 errors by converting named parameter syntax (property:) to property initialization syntax (property =):
- Description: → Description =
- IgnoreInSnapshotTests: → IgnoreInSnapshotTests =
- ViewModelType: → ViewModelType =
- IsManualTest: → IsManualTest =
- UsesFrame: → UsesFrame =

SampleAttribute constructor only accepts string[]/Type[] categories as positional parameters. All other values must be set as properties using = syntax, not : syntax.

Co-authored-by: MartinZikmund <1075116+MartinZikmund@users.noreply.github.com>

Author: Copilot

src/SamplesApp/UITests.Shared/Lottie/SampleLottieAnimation.xaml.cs

@@ -6,7 +6,7 @@
 
 namespace UITests.Shared.Lottie
 {
-	[Sample("Lottie", "Sample animation", IgnoreInSnapshotTests: true /* Fails for Android # */)]
+	[Sample("Lottie", "Sample animation", IgnoreInSnapshotTests = true /* Fails for Android # */)]
 	public sealed partial class SampleLottieAnimation : Page
 	{
 		public SampleLottieAnimation()

src/SamplesApp/UITests.Shared/Microsoft_UI_Xaml_Controls/WebView2Tests/WebView2_Mailto.xaml.cs

@@ -3,7 +3,7 @@
 
 namespace SamplesApp.Microsoft_UI_Xaml_Controls.WebView2Tests
 {
-	[Sample("WebView", "WebView2_Mailto", Description: "This sample will open a mailto: link")]
+	[Sample("WebView", "WebView2_Mailto", Description = "This sample will open a mailto: link")]
 	public sealed partial class WebView2_Mailto : UserControl
 	{
 		public WebView2_Mailto()

src/SamplesApp/UITests.Shared/Microsoft_UI_Xaml_Controls/WebView2Tests/WebView2_NavigateToString.xaml.cs

@@ -4,7 +4,7 @@
 
 namespace SamplesApp.Microsoft_UI_Xaml_Controls.WebView2Tests
 {
-	[Sample("WebView", "WebView2_NavigateToString", typeof(WebView2ViewModel), Description: "WebView2 demonstrating NavigateToString method")]
+	[Sample("WebView", "WebView2_NavigateToString", typeof(WebView2ViewModel), Description = "WebView2 demonstrating NavigateToString method")]
 	public sealed partial class WebView2_NavigateToString : UserControl
 	{
 		public WebView2_NavigateToString()

src/SamplesApp/UITests.Shared/Microsoft_UI_Xaml_Controls/WebView2Tests/WebView2_NavigateToString2.xaml.cs

@@ -5,7 +5,7 @@
 
 namespace UITests.Shared.Microsoft_UI_Xaml_Controls.WebView2Tests
 {
-	[Uno.UI.Samples.Controls.Sample("WebView", "WebView2_NavigateToString2", Description: "Testing a NavigateToString with a very long string")]
+	[Uno.UI.Samples.Controls.Sample("WebView", "WebView2_NavigateToString2", Description = "Testing a NavigateToString with a very long string")]
 	public sealed partial class WebView2_NavigateToString2 : UserControl
 	{
 		public WebView2_NavigateToString2()

src/SamplesApp/UITests.Shared/Microsoft_UI_Xaml_Controls/WebView2Tests/WebView2_NavigateToUri.xaml.cs

@@ -4,7 +4,7 @@
 
 namespace SamplesApp.Microsoft_UI_Xaml_Controls.WebView2Tests
 {
-	[Sample("WebView", "WebView2_NavigateToUri", Description: "WebView2 demonstrating simple navigation to a URI")]
+	[Sample("WebView", "WebView2_NavigateToUri", Description = "WebView2 demonstrating simple navigation to a URI")]
 	public sealed partial class WebView2_NavigateToUri : Page
 	{
 		public WebView2_NavigateToUri()

src/SamplesApp/UITests.Shared/Microsoft_UI_Xaml_Controls/WebView2Tests/WebView2_Static.xaml.cs

@@ -4,7 +4,7 @@
 
 namespace SamplesApp.Microsoft_UI_Xaml_Controls.WebView2Tests
 {
-	[Sample("WebView", "WebView2_Static", typeof(WebView2StaticViewModel), Description: "Simple WebView2 navigation using Source property")]
+	[Sample("WebView", "WebView2_Static", typeof(WebView2StaticViewModel), Description = "Simple WebView2 navigation using Source property")]
 	public sealed partial class WebView2_Static : UserControl
 	{
 		public WebView2_Static()

src/SamplesApp/UITests.Shared/Playground/Playground.xaml.cs

@@ -14,7 +14,7 @@
 
 namespace UITests.Playground;
 
-[Sample("Playground", "Playground", IgnoreInSnapshotTests: true)]
+[Sample("Playground", "Playground", IgnoreInSnapshotTests = true)]
 public sealed partial class Playground : UserControl
 {
 #if __WASM__

src/SamplesApp/UITests.Shared/Windows_ApplicationModel/Chat/ComposeSms.xaml.cs

@@ -20,7 +20,7 @@
 
 namespace UITests.Shared.Windows_ApplicationModel.Chat
 {
-	[Sample("Windows.ApplicationModel", "ChatMessageManager", IgnoreInSnapshotTests: true, Description: "Test the ChatMessageManager.ShowComposeSmsMessageAsync API.")]
+	[Sample("Windows.ApplicationModel", "ChatMessageManager", IgnoreInSnapshotTests = true, Description = "Test the ChatMessageManager.ShowComposeSmsMessageAsync API.")]
 	public sealed partial class ComposeSms : UserControl, System.ComponentModel.INotifyPropertyChanged
 	{
 		private string _phoneNumber;

src/SamplesApp/UITests.Shared/Windows_ApplicationModel/ClipboardTests.xaml.cs

@@ -25,7 +25,7 @@
 
 namespace UITests.Windows_ApplicationModel
 {
-	[Sample("Windows.ApplicationModel", ViewModelType: typeof(ClipboardTestsViewModel))]
+	[Sample("Windows.ApplicationModel", ViewModelType = typeof(ClipboardTestsViewModel))]
 	public sealed partial class ClipboardTests : Page
 	{
 		public ClipboardTests()

src/SamplesApp/UITests.Shared/Windows_ApplicationModel/Email/EmailManagerTests.xaml.cs

@@ -30,8 +30,8 @@ namespace UITests.Shared.Windows_ApplicationModel.Email
 	[Sample(
 		"Windows.ApplicationModel",
 		"EmailManager",
-		Description: "Test the EmailManager.ShowComposeNewEmailAsync API.",
-		ViewModelType: typeof(EmailManagerViewModel))]
+		Description = "Test the EmailManager.ShowComposeNewEmailAsync API.",
+		ViewModelType = typeof(EmailManagerViewModel))]
 	public sealed partial class EmailManagerTests : Page
 	{
 		public EmailManagerTests()