Have the Image Build workflow also check if tag exists with production prefix

[ejfine]

Is there an existing issue for this?

• I have searched the existing issues

Feature description

In order to create lifecycle policies that delete non-production images, we need to have this workflow check also if the tag exists with production-context-blahblah so it doesn't rebuild in that case

[ejfine]

...this is probably for copier-aws-central-infrastructure