[Messenger] Do not throw 'no handlers' exception when skipping handlers due to duplicate handling #48120
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I'm not sure if this change is expected or not, but I found this [while investigating another bug](https://github.com/wouterj/sf-reproducer/tree/messenger-star-routing in the Messenger component. When you handle the same message twice, you'll get an
NoHandlerForMessageException
because all handlers are skipped.What would be the expected behavior? Maybe we have to throw a different exception when the same envelope is handled twice?