[KubernetesPodOperator] Add fail fast detection during pod startup #49867
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Overview
This PR extends the improvements of this PR: #49784
The idea is to detect failures like ErrImagePull or InvalidImageName fast to give fast feedback to the user. Without this the await_pod_start would wait until we run into the timeout. Failures like this can be detected fast and result in an failed Pod startup. E.g. 1) User gets fast feedback if they added the wrong image name. 2) User gets fast feedback if image is not available.
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Details of change: