[Test] Add more C++ stdlib symbols on Linux
Two new symbols:
`void std::__detail::__variant::__erased_ctor<std::monostate&, std::monostate&&>(void*, void*)`
`void std::__detail::__variant::__erased_assign<std::monostate&, std::monostate&&>(void*, void*)`
Likely added from #71627.
