Building Qt Webengine on macOS x86_64 takes forever

It seems Qt Webengine build times in macOS has increased lately and latest builds ( e.g https://codereview.qt-project.org/c/qt/qtwebengine/+/601834) are already failing because of 10 h timeout!

Based on metrics (https://testresults.qt.io/grafana/d/b663QUAVk/ci-metrics-workitem-durations?orgId=1&var-inter=1d&var-project=qt%2Fqtwebengine&var-branch=dev&var-platform_id=macos-universal-on-x86_64&var-taskType=Integration&var-type=Build&var-host1=qt-srv-mac01.on1.qt.io&var-host1=qt-srv-mac02.on1.qt.io&var-host1=qt-srv-mac03.on1.qt.io&var-host1=qt-srv-mac04.on1.qt.io&var-host1=qt-srv-mac05.on1.qt.io&var-host1=qt-srv-mac06.on1.qt.io&var-host1=qt-srv-mac07.on1.qt.io&var-host1=qt-srv-mac08.on1.qt.io&var-host1=qt-srv-mac09.on1.qt.io&var-host1=qt-srv-mac10.on1.qt.io&var-host1=qt-srv-mac11.on1.qt.io&var-host1=qt-srv-mac12.on1.qt.io&var-host1=qt-srv-mac13.on1.qt.io&var-host1=qt-srv-mac14.on1.qt.io&var-host1=qt-srv-mac15.on1.qt.io&var-host1=qt-srv-mac16.on1.qt.io&var-host1=qt-srv-mac17.on1.qt.io&var-host1=qt-srv-mac18.on1.qt.io&var-host1=qt-srv-mac19.on1.qt.io&var-host1=qt-srv-mac20.on1.qt.io&var-host1=qt-srv-mac21.on1.qt.io&var-host1=qt-srv-mac22.on1.qt.io&var-host1=qt-srv-mac23.on1.qt.io&var-host1=qt-srv-mac25.on1.qt.io&var-host1=qt-srv-mac26.on1.qt.io&var-host1=qt-srv-mac27.on1.qt.io&var-host1=qt-srv-mac28.on1.qt.io&var-host1=qt-srv-mac29.on1.qt.io&var-host1=qt-srv-mac30.on1.qt.io&var-host1=qt-srv-mac31.on1.qt.io&var-host1=qt-srv-mac32.on1.qt.io&var-host1=qt-srv-mac33.on1.qt.io&var-host1=qt-srv-mac34.on1.qt.io&var-host2=just-coyote.on1.qt.io&var-host2=legal-goblin.on1.qt.io&var-host2=legal-moray.on1.qt.io&from=now-30d&to=now) it seems build times has more than doubled from 31.10.2024 ->