Redirect to unstyled search results page after completing editorial action on page

[Alex Bridge]

Issue Summary

When doing an admin-wide search, results pulled in via XMLHttpRequest use an incorrect next querystring parameter in their action links. This means that editors are brought to an unstyled search results page on completing their action.

Steps to Reproduce

1. Start a new project and create test content which can be searched for
2. Navigate to /admin/pages/search/
3. Enter a search query into the box at the top of the page
4. Open the ... action menu for one of the search results, and choose the Edit (*) action.
5. Edit the page and publish it
6. The browser is redirected to /admin/pages/search/results/, which is unstyled.

• Expected behaviour: the next parameter ends the action journey on /admin/pages/search/.

(*also applies to any action which sets a next parameter in its link querystring)

Screenshots

This appears to be similar to #11177

• I have confirmed that this issue can be reproduced as described on a fresh Wagtail project: yes

Technical details

• Python version: 3.10.12
• Django version: 5.0.3
• Wagtail version: 6.0.2
• Browser version: Firefox 125.0

[Matt Westcott]

Confirmed on current main branch.

[Roushan Singh]

Can I take this one

[Matt Westcott]

Fixed in #11881