fix interceptors build against efcore7

Author: MaceWindu

Source/LinqToDB.EntityFrameworkCore/Internal/LinqToDBOptionsExtension.cs

@@ -100,13 +100,12 @@ public override string LogFragment
 				}
 			}
 
-			public override long GetServiceProviderHashCode()
-			{
-				return 0;
-			}
+			public override int GetServiceProviderHashCode() => 0;
 
 			public override void PopulateDebugInfo(IDictionary<string, string> debugInfo)
 				=> debugInfo["Linq2Db"] = "1";
+
+			public override bool ShouldUseSameServiceProvider(DbContextOptionsExtensionInfo other) => true;
 		}
 	}
 }

Source/LinqToDB.EntityFrameworkCore/LinqToDBContextOptionsBuilder.cs

@@ -10,7 +10,7 @@ namespace LinqToDB.EntityFrameworkCore
 	/// </summary>
 	public class LinqToDBContextOptionsBuilder 
 	{
-		private readonly LinqToDBOptionsExtension _extension;
+		private readonly LinqToDBOptionsExtension? _extension;
 
 		/// <summary>
 		/// Db context options
@@ -34,7 +34,7 @@ public LinqToDBContextOptionsBuilder(DbContextOptionsBuilder optionsBuilder)
 		/// <returns></returns>
 		public LinqToDBContextOptionsBuilder AddInterceptor(IInterceptor interceptor)
 		{
-			_extension.Interceptors.Add(interceptor);
+			_extension?.Interceptors.Add(interceptor);
 			return this;
 		}
 	}

Tests/LinqToDB.EntityFrameworkCore.BaseTests/Interceptors/TestEfCoreAndLinq2DbComboInterceptor.cs

@@ -147,13 +147,13 @@ public ValueTask<InterceptionResult<DbDataReader>> ReaderExecutingAsync(DbComman
 			return ValueTask.FromResult(result);
 		}
 
-		public object ScalarExecuted(DbCommand command, CommandExecutedEventData eventData, object result)
+		public object? ScalarExecuted(DbCommand command, CommandExecutedEventData eventData, object? result)
 		{
 			HasInterceptorBeenInvoked = true;
 			return result;
 		}
 
-		public ValueTask<object> ScalarExecutedAsync(DbCommand command, CommandExecutedEventData eventData, object result, CancellationToken cancellationToken = default)
+		public ValueTask<object?> ScalarExecutedAsync(DbCommand command, CommandExecutedEventData eventData, object? result, CancellationToken cancellationToken = default)
 		{
 			HasInterceptorBeenInvoked = true;
 			return ValueTask.FromResult(result);