[release-1.11] Fix binary events with no data and ce overrides not being delivered

[knative-prow-robot]

This is an automated cherry-pick of #3475

:bug: Fixed bug where binary events with no data were not delivered if cloud event overrides were enabled

[knative-prow]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (c9160b6) 58.45% compared to head (542437c) 58.45%.

Additional details and impacted files

@@              Coverage Diff              @@
##           release-1.11    #3580   +/-   ##
=============================================
  Coverage         58.45%   58.45%           
=============================================
  Files                91       91           
  Lines              9235     9235           
=============================================
  Hits               5398     5398           
  Misses             3410     3410           
  Partials            427      427           

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[Cali0707]

/cc @pierDipi

[Cali0707]

/retest

[Cali0707]

/retest

[knative-prow]

@knative-prow-robot: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
unit-tests_eventing-kafka-broker_release-1.11	542437c	link	true	/test unit-tests
channel-integration-tests-sasl-plain_eventing-kafka-broker_release-1.11	542437c	link	true	/test channel-integration-tests-sasl-plain
reconciler-tests-namespaced-broker_eventing-kafka-broker_release-1.11	542437c	link	true	/test reconciler-tests-namespaced-broker
integration-tests_eventing-kafka-broker_release-1.11	542437c	link	true	/test integration-tests
channel-integration-tests-sasl-ssl_eventing-kafka-broker_release-1.11	542437c	link	true	/test channel-integration-tests-sasl-ssl
channel-reconciler-tests-ssl_eventing-kafka-broker_release-1.11	542437c	link	true	/test channel-reconciler-tests-ssl
reconciler-tests_eventing-kafka-broker_release-1.11	542437c	link	true	/test reconciler-tests
channel-reconciler-tests-sasl-plain_eventing-kafka-broker_release-1.11	542437c	link	true	/test channel-reconciler-tests-sasl-plain
channel-reconciler-tests-sasl-ssl_eventing-kafka-broker_release-1.11	542437c	link	true	/test channel-reconciler-tests-sasl-ssl
channel-integration-tests-ssl_eventing-kafka-broker_release-1.11	542437c	link	true	/test channel-integration-tests-ssl
upgrade-tests_eventing-kafka-broker_release-1.11	542437c	link	true	/test upgrade-tests

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[Cali0707]

Closing in favour of #3596