Provide default path for protected environments

What does this MR do and why?

Due to the conditional nature of protected environments (ee required, license check, editing an environment), we should provide a default fallback value that hides the link if it isn't provided at all.

Changelog: fixed

Screenshots or screen recordings

before	after

How to set up and validate locally

1. Navigate to a project's environments page: ** Deployments > Environments**
2. Click on New environment
3. Verify console + form works

MR acceptance checklist

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