Top flaky test: tst_qwidget::updateWhileMinimized

Test case: tst_qwidget::updateWhileMinimized has failed 3 times and was flaky 0 times last week.

The test has blocked around 3 Gerrit changes past week

Coin log excerpt from failed run:
agent:2024/07/19 23:58:34 build.go:404: 508: FAIL! : tst_QWidget::updateWhileMinimized() Compared values are not the same
agent:2024/07/19 23:58:34 build.go:404: 508: Actual (widget.numPaintEvents): 1
agent:2024/07/19 23:58:34 build.go:404: 508: Expected (count) : 0
agent:2024/07/19 23:58:34 build.go:404: 508: Loc: [/Users/qt/work/qt/qtbase/tests/auto/widgets/kernel/qwidget/tst_qwidget.cpp(9221)]
agent:2024/07/19 23:58:34 build.go:404: 508: QDEBUG : tst_QWidget::updateWhileMinimized() qt.widgets.focus: QWidget(0x16f1895b0, name="UpdateWidget") wasn't removed, because it is not part of a focus chain.
agent:2024/07/19 23:58:34 build.go:404: 508: SKIP : tst_QWidget::alienWidgets() This test is only for X11/Windows.
agent:2024/07/19 23:58:34 build.go:404: 508: Loc: [/Users/qt/work/qt/qtbase/tests/auto/widgets/kernel/qwidget/tst_qwidget.cpp(9242)]
agent:2024/07/19 23:58:34 build.go:404: 508: QDEBUG : tst_QWidget::nativeWindowPosition(non-native all the way) qt.widgets.focus: Initializing focus chain of QWidget(0x16f189630)
agent:2024/07/19 23:58:34 build.go:404: 508: QDEBUG : tst_QWidget::nativeWindowPosition(non-native all the way) qt.widgets.focus: Initializing focus chain of QWidget(0x16f189600)
agent:2024/07/19 23:58:34 build.go:404: 508: QDEBUG : tst_QWidget::nativeWindowPosition(non-native all the way) qt.widgets.focus: Initializing focus chain of QWidget(0x16f1895d0)
agent:2024/07/19 23:58:34 build.go:404: 508: QDEBUG : tst_QWidget::nativeWindowPosition(non-native all the way) qt.widgets.focus: Initializing focus chain of QWidget(0x16f1895d0)
...

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