Wrong QScrollBar with Qt6.5 + windows vista style in RTL mode

Looks like 46f98147f4e3a09b32042c0655d5de7285a795e3 ([~santhoshkumar]) introduces a regression for all widgets in RTL mode - e.g. the scrollbars are painted in the wrong order and the scroll direction is wrong:

This is due to the fact that visualRect() is called twice inside qwindowsvistastyle::subControlRect() in the default branch because the base class (qcommonstyle) already calls visualRect() and it's called again afterwards (line 4511).

I've attached a testcase for a QScrollBar but there should also be other widgets affected.

Found by a user report in the forum: https://forum.qt.io/topic/148177/