Fix remaining compilation errors: correct EFCoreCompatibilityHelper namespace and EntitySplittingMySqlFixture base class

Co-authored-by: renemadsen <76994+renemadsen@users.noreply.github.com>

Author: Copilot

test/EFCore.MySql.FunctionalTests/EFCoreCompatibilityTests.cs

@@ -6,7 +6,7 @@
 using System.Threading.Tasks;
 using Microsoft.EntityFrameworkCore;
 using Xunit;
-using CompatHelper = Pomelo.EntityFrameworkCore.MySql.Infrastructure.Internal.EFCoreCompatibilityHelper;
+using CompatHelper = Pomelo.EntityFrameworkCore.MySql.Json.Microsoft.Infrastructure.Internal.EFCoreCompatibilityHelper;
 
 namespace Pomelo.EntityFrameworkCore.MySql.FunctionalTests
 {

test/EFCore.MySql.FunctionalTests/EntitySplittingMySqlTest.cs

@@ -1,4 +1,5 @@
 using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.TestModels.EntitySplittingModel;
 using Microsoft.EntityFrameworkCore.TestUtilities;
 using Pomelo.EntityFrameworkCore.MySql.FunctionalTests.TestUtilities;
 using Xunit.Abstractions;
@@ -15,8 +16,7 @@ public class EntitySplittingMySqlFixture : NonSharedModelTestFixture
     {
         protected override ITestStoreFactory TestStoreFactory
             => MySqlTestStoreFactory.Instance;
-
-        protected override string StoreName
-            => "EntitySplittingTest";
+            
+        protected override string StoreName => "EntitySplittingTest";
     }
 }