Page: add new max widths for page content

[jakobe]

Which issue does this PR close?

This PR closes #3463

What is the new behavior?

Added a new xl page max width of 1392px. Also renamed/deprecated optimized to lg.

Does this PR introduce a breaking change?

• [ ] Yes
• [x] No

Are there any additional context?

Checklist:

The following tasks should be carried out in sequence in order to follow the process of contributing correctly.

Reminders

• [x] Make sure you have implemented tests following the guidelines in: "The good: Test".
• [x] Make sure you have updated the cookbook with examples and showcases (for bug fixes, enhancements & new components).

Review

• [x] Determine if your changes are a fix, feature or breaking-change, and add the matching label to your PR. If it is tooling, dependency updates or similar, add ignore-for-release.
• [x] Do a self-review.
• [x] Request that the changes are code-reviewed
• [ ] Request that the changes are UX reviewed (only necessary if your PR introduces visual changes)

When the pull request has been approved it will be merged to develop by Team Kirby.

[jakobe]

Looks good to me

Do we have an issue in the backlog for handling the deprecation TODO comments?

No not as of now, we should probably create a "catch-all" issue to make sure we clean up before next major + how we communicate to affected teams 🤞🏻