test: migrate AdminUI/ControlPlane/Runtime/Host tests to xunit.v3 (#756)

Akka.TestKit.Xunit2 -> Akka.TestKit.Xunit 1.5.62 (xunit.v3 TestKit; needs xunit.v3 3.2.2, set via
VersionOverride on the four projects). Removes the xunit 2.9.3 pin. IAsyncLifetime returns ValueTask,
SqlServerFactAttribute gains the source-info ctor, and xUnit1051 call sites pass
TestContext.Current.CancellationToken. Test counts unchanged.

Claude-Session: https://claude.ai/code/session_01GT67AEHd2Acv1YPwGfXEoV

tests/Server/ZB.MOM.WW.OtOpcUa.Runtime.Tests/Scripting/DpsScriptLogPublisherTests.cs

@@ -39,7 +39,7 @@ public sealed class DpsScriptLogPublisherTests : RuntimeActorTestBase
         // Send the Subscribe FROM the probe so the SubscribeAck returns to the probe's mailbox
         // (a bare mediator.Tell would route the ack to the implicit TestActor instead).
         probe.Send(mediator, new Subscribe(VirtualTagActor.ScriptLogsTopic, probe.Ref));
-        probe.ExpectMsg<SubscribeAck>(TimeSpan.FromSeconds(10));
+        probe.ExpectMsg<SubscribeAck>(TimeSpan.FromSeconds(10), cancellationToken: TestContext.Current.CancellationToken);
 
         var publisher = new DpsScriptLogPublisher(() => Sys, new NoopHub());
         var entry = SampleEntry();
@@ -51,7 +51,7 @@ public sealed class DpsScriptLogPublisherTests : RuntimeActorTestBase
         {
             publisher.Publish(entry);
             probe.ExpectMsg<ScriptLogEntry>(TimeSpan.FromMilliseconds(200)).ShouldBe(entry);
-        }, duration: TimeSpan.FromSeconds(5), interval: TimeSpan.FromMilliseconds(250));
+        }, duration: TimeSpan.FromSeconds(5), interval: TimeSpan.FromMilliseconds(250), TestContext.Current.CancellationToken);
     }
 
     /// <summary>