XCode build fails: traditional headermap style is no longer supported

When my QML app is built for iOS and opened in XCode Version 14.3.1 (14E300c), building fails producing the following warning:

Traditional headermap style is no longer supported; please migrate to using separate headermaps and set 'ALWAYS_SEARCH_USER_PATHS' to NO.

I have not changed the default build settings, so qmake is used to build the application with the default parameters set by QtCreator 11.0.1.

I found the following QTBUG from last year that seems to deal with the same issue: https://bugreports.qt.io/browse/QTBUG-104396

Reading the last comment here it seems that the issue wasn't entirely solved, however the bug was closed. I have not tried any of the suggested temporary bugfixes, as I don't entirely understand how the connection between building in Qt Creator and XCode works exactly (and how the static and dynamic linking and headermaps work). Two evenings of googling didn't get me closer to the current state of this issue.

So my question is: Has this been fixed, and if so - what am I doing wrong? And if not, what kinds of workarounds are the recommended way to fix this now one year later?