Amplify Console does not warn user they are missing amplify:ListBackendEnvironments policy

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- [X] I have checked to see if my question is addressed in the [FAQ](https://github.com/aws-amplify/amplify-hosting/blob/master/FAQ.md).
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### App Id

NA

### AWS Region

us-west-2

### Amplify Hosting feature

Not Applicable

### Is your feature request related to a problem? Please describe:

When viewing the AWS Amplify Console, I am unable to view the backend environments if my policy is missing `amplify:ListBackendEnvironments`. This isn't a bug in itself, but I was presented with a blank screen instead of telling me I couldn't view the backends. As a consequence I spent a few hours trying to figure out why the backend isn't deploying, when it actually was, I just couldn't view it.

### Describe how you'd like this feature to work

I would prefer the AWS Console present a message to the user that they are missing a permission to view the backend.

Start by reproducing the AWS Amplify Console backend-environments view with a policy that lacks amplify:ListBackendEnvironments. Trace how the blank screen is handled when that permission is missing. Done means the console clearly tells the user which permission is required instead of showing an empty view.

Written by the indexing model from the issue text.