[release/8.0] Fix runtime dispatch to static virtuals on interface types #91440
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Backport of #91374 to release/8.0
/cc @MichalStrehovsky
Customer Impact
This was a customer reported issue at #90333.
It's not possible to resolve certain static virtual interface dispatches at runtime.
Most static virtual interface dispatches get resolved at compile time. But for some forms of dynamic code, we need to be able to compute this at runtime. Logic was missing to do that on interfaces.
Testing
All Native AOT testing, plus targeted tests, plus customer repro.
Risk
Low. We have decent test coverage.
IMPORTANT: If this backport is for a servicing release, please verify that:
The PR target branch is
release/X.0-staging
, notrelease/X.0
.If the change touches code that ships in a NuGet package, you have added the necessary package authoring and gotten it explicitly reviewed.