### Background
T291304 simplified and reduced the number of nav landmarks in modern Vector, which removed landmarks that were poorly named or didn't contain enough links. This reduces the overhead for new screenreader users to learn navigation on the site by reducing the number of navigation options.
However, there were [[ https://phabricator.wikimedia.org/T291304#8078998 | concerns ]] around how could impact existing screenreaders users who would have to learn these changes. This task is for restoring some of the original landmarks, which will likely be subject to change in the future with the navigation restructure epic anyway.
Currently:
https://phabricator.wikimedia.org/F35515262
Proposed:
https://phabricator.wikimedia.org/F35515268
The proposed change restores the "namespaces", "views" and "more options" landmarks.
### AC
[] The "tools" navigation landmark is replaced with "namespaces", "views" and "more options"
[] No visual changes
### Developer notes
The landmarks can be added manually in our mustache template, or we could consider formalizing support for a Menu template that includes the nav landmark, which is how it works in legacy.