Duplicate deployment entries in the Portal

[ishitachawla]

projectkudu/kudu#3268

When deploying with this action an extra deployment object is created in the /deployments list. This clutters the deployments list, and the deployment logs are stored in this extra object, not in the deployment object from GitHub Actions, so it's hard for users to find the right logs. The expected behavior is to have one deployment object with a commit ID that matches the one in GitHub, and that all the logs are in that object.

Duplicate entries in Kudu
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... which creates duplicates in the deployment center
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It looks like the message is added to every push deployment handler: https://github.com/projectkudu/kudu/blob/13824205c60a4bdb53896b9553ef1f370a93b911/Kudu.Services/Deployment/PushDeploymentController.cs#L34
This method adds the deployment to the deployments API: https://github.com/projectkudu/kudu/blob/13824205c60a4bdb53896b9553ef1f370a93b911/Kudu.Core/Deployment/ArtifactDeploymentInfo.cs#L8