The "numeric IntPtr" and "ref field" tests currently use a test hook to pretend like RuntimeFeature.NumericIntPtr and RuntimeFeature.ByRefFields exist. Once a BCL that actually supports numeric IntPtr and ref fields becomes available, we should make it available in our tests and use that instead.

Also, I don't think we execute any ref fields tests via CompileAndVerify at the moment (the code is there, but never exercised in CI).

This issue is referenced in source and tests.

Relates to test plan #60578

PR that added Net60.