fix(docs): update privileged intent information

[JustaSqu1d]

Summary

This pull request makes Privileged Intents more informative and updates privileged intents information.

Information

• This PR fixes an issue.
• This PR adds something new (e.g. new method or parameters).
• This PR is a breaking change (e.g. methods or parameters removed/renamed).
• This PR is not a code change (e.g. documentation, README, typehinting, examples, ...).

Checklist

• I have searched the open pull requests for duplicates.
• If code changes were made then they have been tested.
  • I have updated the documentation to reflect the changes.
• If type: ignore comments were used, a comment is also left explaining why.

[Dorukyum]

I don't think the changes except the April - September fix are needed.

[JustaSqu1d]

Currently, this requires opting in explicitly via the developer portal as well.

makes it sound like it's temporary, while it doesn't seem that way. On the other hand, I think stating why it is required to be enabled on the Developer Portal also helps with understanding.