Runtime async needs tests for catching non-exceptions which are thrown

[davidwrighton]

The goal here is to match async v1 behavior. This implies that we need to test/validate the behavior of traditional async with regards to the RuntimeWrappedException behavior and match up to whatever it is (for cases where the async method is defined in an assemblies with both of the relevant options. Sounds like a test hole we need to fill.

Originally posted by @davidwrighton in #122651 (comment)

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