[vm] Propagate failure to instantiate bogus signature to optimizing compiler. This is a follow up to change https://dart-review.googlesource.com/c/sdk/+/87500 The regression test is expanded to cover the new case. Unrelated change: properly recognize TypeRef as function type. Change-Id: Ibfb4c18825f70433766a1151f087db5fab52a1ca Reviewed-on: https://dart-review.googlesource.com/c/87704 Reviewed-by: Alexander Markov <alexmarkov@google.com> Commit-Queue: Régis Crelier <regis@google.com>
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