Fix broken test and implement full missing overrides

[renemadsen]

After updating dependencies to 10.0.3, we have failing tests:

Failed Pomelo.EntityFrameworkCore.MySql.FunctionalTests.Query.NonSharedPrimitiveCollectionsQueryMySqlTest.Check_all_tests_overridden [< 1 ms]
Error Message:

-- Missing test overrides --

public override async Task Subquery_over_primitive_collection_on_inheritance_derived_type()
{
await base.Subquery_over_primitive_collection_on_inheritance_derived_type();

AssertSql(); // implement correct assert here

}