The layout of the "Show all questions from this user" page is broken

[pixeldesu]

Steps to reproduce the problem

1. Look at an anonymous question
2. Open the "Show all questions from this user" page through the actions

Expected behaviour

The layout of the page looks normal.

Actual behaviour

The header bar containing the anonymous identifier is rendered twice.

Detailed description

This happened in #1404 with the adjustment of the Question page layout, the removal of the .question--fixed class is causing this.

To fix this, adjust the layout of https://github.com/Retrospring/retrospring/blob/main/app/views/moderation/questions/show.html.haml to follow the one in https://github.com/Retrospring/retrospring/blob/main/app/views/question/show.html.haml

Specifications

Retrospring 2023.1028.1