Test failure: no exception in ResultsOfTResult1TResult2_Throws_InvalidOperationException_WhenResultIsNull

[akoeplinger]

While looking at #57303 I discovered the ResultsOfTResult1TResult2_Throws_InvalidOperationException_WhenResultIsNull and other related tests from src/Http/Http.Results/test/ResultsOfTTests.Generated.cs don't actually throw an InvalidOperationException, but no exception at all.

We didn't notice because we didn't await the Assert.ThrowsAsync.

Filing this issue for tracking.