Maintain CloudWatch settings with CloudFormation for cross-account views

For enabling account switching the part of data sharing provide a CloudFormation template like described here: https://repost.aws/questions/QUmLk1Q-VrSTW6ok3Scj8o6A/enabling-cross-account-functionality-in-cloudwatch-without-aws-console

Unfortunately, I can't find anything like this for cross-account views.

I like to manage the custom account selector with CloudFormation.