Pull Request Description

This PR fixes an issue where the displayed comment sort type in the post page app bar was incorrect.

There was some weird mapping between CommentSortPicker.getCommentSortTypeItems and allSortTypeItems, and to be honest I don't know why that was needed since getCommentSortTypeItems returns a ListPickerItem<CommentSortType> which is exactly what we need here. If you can think of any potential problems here, please let me know!

Issue Being Fixed

Issue Number: #1770

Screenshots / Recordings

Checklist

• If a new package was added, did you ensure it uses an appropriate license and is actively maintained?
• Did you use localized strings (and added appropriate descriptions) where applicable?
• Did you add semanticLabels where applicable for accessibility?