feat: support async functions in toThrow

[notoriousmango]

Summary

resolves #9240

Test plan

snapshot && unit test

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[SimenB]

Thanks for the PR! I don't think we should check for async functions, but rather, if passed typeof actual === 'function' we should invoke that function and verify the returned value is a promise

[notoriousmango]

Cla signed

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[notoriousmango]

@SimenB Thank you!

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