fix recursion crash when calling setStyleSheet with qproperty-styleSheet

fix recursion crash when calling setStyleSheet with qproperty-styleSheet

Origin: upstream, https://code.qt.io/cgit/qt/qtbase.git/commit/?id=e9cdcc7cb314586a
Last-Update: 2021-11-13

When calling setStyleSheet with property qproperty-styleSheet,
QStyleSheetStyle::polish will call QStyleSheetStyle::setProperties,
and then QStyleSheetStyle::setProperties goes on to call setProperty.
Because there is property qproperty-styleSheet, it will update
stylesheet by calling QStyleSheetStyle::polish.
This causes the recursive call to crash.

Gbp-Pq: Name fix_recursion_crash.diff