[runtime] Adjust exception handling to always return managed exceptions if so requested.#15432
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…ns if so requested. In the following scenario: * Objective-C exception mode is to throw a managed exception. * The xamarin_process_nsexception_using_mode was given a pointer to store any resulting exceptions. * The Objective-C exception didn't already have an associated managed exception. We'd throw the managed exception upon return to managed code instead of returning the managed exception. With this change the xamarin_process_nsexception_using_mode will always return the resulting managed exception in the scenario above (this way the behavior is identical independent of whether the Objective-C exception already has an associated managed exception or not).
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In the following scenario:
resulting exceptions.
We'd throw the managed exception upon return to managed code instead of
returning the managed exception.
With this change the xamarin_process_nsexception_using_mode will always return
the resulting managed exception in the scenario above (this way the behavior
is identical independent of whether the Objective-C exception already has an
associated managed exception or not).