ComplexCollection and ComplexProperty entry methods have incorrect parameter types

[AndriySvyryd]

Originally reported in #37026 (comment)

var nestedJson = new EntityEntry<BlogWithNested>(entityEntry).ComplexProperty(b => b.NestedJson);
var items = nestedJson.ComplexCollection(j => j.Items);

Results in 'InternalComplexEntryTest.BlogWithNested' does not contain a definition for 'Items' and no accessible extension method 'Items' accepting a first argument of type 'InternalComplexEntryTest.BlogWithNested' could be found (are you missing a using directive or an assembly reference?)