Marking xUnit3002 as Hidden because there are strange false positives…

… I can't track down

src/xunit.analyzers.tests/Analyzers/X3000/DoNotTestForConcreteTypeOfJsonSerializableTypesTests.cs

@@ -11,12 +11,15 @@ public async Task AcceptanceTest()
 	{
 		var code = /* lang=c#-test */ """
 			using Xunit;
-			using Xunit.Sdk;
 			using System.Collections.Generic;
 			using System.Linq;
 
-			[JsonTypeID("MyMessage")]
-			public class MyMessage { };
+			public static class MessageFactory {
+			    public static MyMessage Create(int propertyValue = 42) =>
+			        new() {
+			            PropertyValue = propertyValue,
+			        };
+			}
 
 			public class TheClass {
 			    public void TheMethod() {
@@ -38,6 +41,10 @@ public void TheMethod() {
 			        Assert.IsNotAssignableFrom(typeof(string), message);
 			        Assert.IsNotAssignableFrom<string>(message);
 
+			        // Construction should not be prohibited
+			        _ = new MyMessage { PropertyValue = 2112 };
+			        _ = MessageFactory.Create(2600);
+
 			        // Testing against a serializable type
 			        Assert.True([|message is MyMessage|]);
 			        Assert.True([|message is not MyMessage|]);
@@ -55,7 +62,18 @@ public void TheMethod() {
 			    }
 			}
 			""";
+		var messagePartial1 = /* lang=c#-test */ """
+			using Xunit.Sdk;
+
+			[JsonTypeID("MyMessage")]
+			sealed partial class MyMessage { }
+			""";
+		var messagePartial2 = /* lang=c#-test */ """
+			public partial class MyMessage {
+			    public int PropertyValue { get; set; }
+			};
+			""";
 
-		await Verify.VerifyAnalyzerV3(LanguageVersion.CSharp9, code);
+		await Verify.VerifyAnalyzerV3(LanguageVersion.CSharp9, [messagePartial1, messagePartial2, code]);
 	}
 }

src/xunit.analyzers/Utility/Descriptors.xUnit3xxx.cs

@@ -29,7 +29,7 @@ public static partial class Descriptors
 			"xUnit3002",
 			"Classes which are JSON serializable should not be tested for their concrete type",
 			Extensibility,
-			Warning,
+			Hidden,
 			"Class {0} is JSON serializable and should not be tested for its concrete type. Test for its primary interface instead."
 		);