Sort the pinning message list in the same order than the banner. By timeline order.

[florianduros]

Checklist

• [ ] Tests written for new code (and old code if feasible).
• [ ] New or updated public/exported symbols have accurate TSDoc documentation.
• [ ] Linter and other CI checks pass.
• [ ] Sign-off given on the changes (see CONTRIBUTING.md).

Change the sorting of the pinning message list to match the banner. Before it was sorted by pinning order, now it's sorted by the order in the timeline.