Polish menu before creating platform window
A style may want to change the surface format of the window. Changing the surface format after the window has been created has no effect though. One example of this is Breeze where the context menus created here had an ugly border instead of the intended look. This is because the setting of Qt::WA_TranslucentBackground by breeze had no effect anymore after the window was already created.
!189 with work/polishedmenu in 41 minutes and 23 seconds (queued for 41 minutes and 41 seconds)1 job for
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|linux kf5-qt5 qt5.12||Build|