'ceOverrides' field in CR does not seems to work in eventing-github adapter

[inspirit941]

Describe the bug if I Set CeOverrides options in GithubSource CR and get event from github, CeOverrides extensions fields are not included in incoming cloudevent payload.

it seems like adding ceoverride extension logic is not exist in githubsource event adapter.

• pingsource: https://github.com/knative/eventing/blob/d989ca732fad3701fef677f80594504512a39ee5/pkg/adapter/mtping/runner.go#L169

• kafkaSource: https://github.com/knative-extensions/eventing-kafka/blob/f7bf17cf3a71ffed1a741818788defe827936d9f/pkg/source/adapter/adapter.go#L119

  Expected behavior

ceOverride field provided in GithubSource CR should be included in cloudevent.

To Reproduce

Knative release version tested in knative serving 1.11, knative eventing 1.11.2

Additional context

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