Tweak test to work even when we find error at compile time
Tweak test to work even when we find error at compile time

The test assumes the dispatch failure will only ever going to
be detected at runtime, but we're now smart enough to detect
it at compile time.

Fix the test by using eval-dies-ok instead of just dies-ok.

perl6/roast,dogbert17/roast,dogbert17/roast