Skip deadline when signal is already aborted #472
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The deadline middleware replaces the original signal with a new one and attaches listeners for the
abortevent. This works for signals that are not aborted yet but if a signal is already aborted before starting the gRPC call the deadline middleware would still make the request because it did not receive theabortevent.This change skips the deadline middleware completely for calls with an aborted signal. The
nice-grpclibrary will handle the aborted signal and abort the call correctly.