Wiki pages list (/wikis/pages): "New page" button missing for Group wikis but present for Project wikis
## Summary
On the `/wikis/pages` list page, **Project wikis** display a **"New page"** button, allowing users to create a new wiki page directly from the pages list. However, this button is **absent for Group wikis**.
To create a new page in a Group wiki, a user must:
1. Navigate into an existing wiki page
2. Open the dropdown in the top right
3. Select **New page**
This is an inconsistent experience between Project and Group wikis, and the workaround is non-obvious — particularly for users who are not yet familiar with the wiki interface.
## Steps to reproduce
1. Navigate to a **Project** wiki's pages list (`/wikis/pages`)
- Observe: a **"New page"** button is visible
* {width=900 height=106}
2. Navigate to a **Group** wiki's pages list (`/wikis/pages`)
- Observe: **no "New page" button** is present
* {width="900" height="126"}
## Impact
- Users of Group wikis have no direct way to create a new page from the pages list, unlike Project wiki users
- The workaround (entering an existing page → top-right dropdown → New page) is unintuitive and easy to miss
- This inconsistency may cause confusion, especially for users who switch between Project and Group wikis
## Questions for consideration
- Should the **"New page"** button be added to the Group wiki `/wikis/pages` page for consistency with Project wikis?
- Is the absence of this button for Group wikis intentional? If so, what is the rationale?
## Implementation considerations
- This appears to be primarily a **frontend** change — adding the "New page" button to the Group wiki pages list, mirroring the existing behaviour for Project wikis
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