Document permissions that do not require allowlisting

[Montoya]

Description

Updated Snaps Get Allowlisted page

Issue(s) fixed

Fixes #1309

Preview

Checklist

Complete this checklist before merging your PR:

• [x] If this PR contains a major change to the documentation content, I have added an entry to the top of the "What's new?" page.
• [ ] The proposed changes have been reviewed and approved by a member of the documentation team.

[github-actions[bot]]

Preview published: snaps-unrestricted-permissions

[github-actions[bot]]

Preview published: snaps-unrestricted-permissions

[Montoya]

This is a WIP. I am asking the content design team to help me come up with the right messaging for this.

[Montoya]

OK content design has suggested protected vs open permissions

[github-actions[bot]]

Preview published: snaps-unrestricted-permissions