Do not execute unneeded SQL query in 1-to-1 relationship update, which fails on EF Core 8 (details at dotnet/efcore#31271)

Author: bkoelman

src/JsonApiDotNetCore/Repositories/EntityFrameworkCoreRepository.cs

@@ -619,7 +619,18 @@ protected async Task UpdateRelationshipAsync(RelationshipAttribute relationship,
     private bool RequireLoadOfInverseRelationship(RelationshipAttribute relationship, [NotNullWhen(true)] object? trackedValueToAssign)
     {
         // See https://github.com/json-api-dotnet/JsonApiDotNetCore/issues/502.
-        return trackedValueToAssign != null && relationship is HasOneAttribute { IsOneToOne: true };
+        if (trackedValueToAssign != null && relationship is HasOneAttribute { IsOneToOne: true })
+        {
+            IEntityType? leftEntityType = _dbContext.Model.FindEntityType(relationship.LeftType.ClrType);
+            INavigation? navigation = leftEntityType?.FindNavigation(relationship.Property.Name);
+
+            if (navigation != null && navigation.ForeignKey.DeclaringEntityType.ClrType == relationship.LeftType.ClrType)
+            {
+                return true;
+            }
+        }
+
+        return false;
     }
 
     protected virtual async Task SaveChangesAsync(CancellationToken cancellationToken)