build: bump xunit.v3 to 3.2.2 repo-wide, drop the four VersionOverrides (#795)

Central pin 1.1.0 -> 3.2.2; AdminUI/ControlPlane/Runtime/Host.Tests no longer carry VersionOverride.
The three driver IntegrationTests fixtures' Fact/Theory attributes gain the source-info ctor (xUnit3003).
No xUnit1051 fallout remained (already cleaned). Test counts unchanged.

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

tests/Server/ZB.MOM.WW.OtOpcUa.AdminUI.Tests/ZB.MOM.WW.OtOpcUa.AdminUI.Tests.csproj

@@ -7,7 +7,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="xunit.v3" VersionOverride="3.2.2"/>
+        <PackageReference Include="xunit.v3"/>
         <PackageReference Include="Shouldly"/>
         <PackageReference Include="bunit"/>
         <!-- bUnit (test-only) pulls AngleSharp 1.1.1 (GHSA-pgww-w46g-26qg, moderate, HTML parsing of untrusted

tests/Server/ZB.MOM.WW.OtOpcUa.ControlPlane.Tests/ZB.MOM.WW.OtOpcUa.ControlPlane.Tests.csproj

@@ -7,7 +7,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="xunit.v3" VersionOverride="3.2.2"/>
+        <PackageReference Include="xunit.v3"/>
         <PackageReference Include="Shouldly"/>
         <PackageReference Include="Microsoft.NET.Test.Sdk"/>
         <PackageReference Include="Akka.TestKit.Xunit"/>

tests/Server/ZB.MOM.WW.OtOpcUa.Host.Tests/ZB.MOM.WW.OtOpcUa.Host.Tests.csproj

@@ -7,7 +7,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="xunit.v3" VersionOverride="3.2.2"/>
+        <PackageReference Include="xunit.v3"/>
         <PackageReference Include="Shouldly"/>
         <!-- NodeCommandGrpcServiceTests registers a TestProbe under NodeCommunicationActorKey, so the
              service is asserted against the same ActorRegistry seam the Host wires in production. -->

tests/Server/ZB.MOM.WW.OtOpcUa.Runtime.Tests/ZB.MOM.WW.OtOpcUa.Runtime.Tests.csproj

@@ -7,7 +7,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="xunit.v3" VersionOverride="3.2.2"/>
+        <PackageReference Include="xunit.v3"/>
         <PackageReference Include="Shouldly"/>
         <PackageReference Include="Microsoft.NET.Test.Sdk"/>
         <PackageReference Include="Akka.TestKit.Xunit"/>