[NativeAOT] Finalizers should not run for objects with unsuccessful class init (.cctor)

[VSadov]

Re: #118660 (comment)

This applies to the "precise init" case - not the beforeFieldInit.

The behavior of CoreCLR is that Finalizer does not run if class was not initialized successfully.

Note that we do not need to try initialize the class before running finalizer. That should have been attempted already, since we see an instance.

Also note - whether an instance ctor has run is irrelevant.
In fact, finalizer may start and even finish while the ctor is still running.

[dotnet-policy-service]

Tagging subscribers to this area: @agocke, @MichalStrehovsky, @jkotas
See info in area-owners.md if you want to be subscribed.

[VSadov]

This is a corner case and not a regression WRT older versions, thus fixing in v-next is ok.

[MichalStrehovsky]

We don't have information to the tune of "given a MethodTable, did the cctor successfully execute?" or "given a MethodTable, is this beforefieldinit?". This would be a lot of code to write and maintain for a corner of a corner case that we don't even test.

[MichalStrehovsky]

I've just put this on the list at #69919.