Summary: rPd3cbfd95 introduced a regression on some pages when a page footer is configured via `/config/edit/ui.footer-items/`: The footer is not displayed at the bottom. Closes T16147 Test Plan: * Configure a page footer via `/config/edit/ui.footer-items/` * Visit a lot of pages (incl https://we.phorge.it/uiexample/view/PHUIFeedStoryExample/ on which I found this problem) and scroll down (and be aware that some pages like project workboards do not display a footer anyway). Reviewers: O1 Blessed Committers, amybones, mainframe98 Reviewed By: O1 Blessed Committers, amybones, mainframe98 Subscribers: tobiaswiese, valerio.bozzolan, Matthew, Cigaryno Maniphest Tasks: T16147 Differential Revision: https://we.phorge.it/D26133