plasmaquick/dialog: make main item focus scope
The main item should be a focus scope like the root item in QtQuick.Window, so the focus chain can be properly propagated.
BUG: 477286 FIXED-IN: 6.0
The main item should be a focus scope like the root item in QtQuick.Window, so the focus chain can be properly propagated.
BUG: 477286 FIXED-IN: 6.0