QmlDesigner: Do not show bounding rectangles by default

The bounding rectangles can be confusing and break WYSIWYG.
Therefore we disable them by default.

Change-Id: I3713e668b916607670255715e0d41f76a789b34e
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

src/plugins/qmldesigner/components/formeditor/formeditorscene.cpp

@@ -51,7 +51,7 @@ namespace QmlDesigner {
 FormEditorScene::FormEditorScene(FormEditorWidget *view, FormEditorView *editorView)
         : QGraphicsScene(),
         m_editorView(editorView),
-        m_showBoundingRects(true)
+        m_showBoundingRects(false)
 {
     setupScene();
     view->setScene(this);

src/plugins/qmldesigner/components/formeditor/formeditorwidget.cpp

@@ -107,7 +107,7 @@ FormEditorWidget::FormEditorWidget(FormEditorView *view)
     m_showBoundingRectAction->setShortcut(Qt::Key_A);
     m_showBoundingRectAction->setShortcutContext(Qt::WidgetWithChildrenShortcut);
     m_showBoundingRectAction->setCheckable(true);
-    m_showBoundingRectAction->setChecked(true);
+    m_showBoundingRectAction->setChecked(false);
     m_showBoundingRectAction->setIcon(Utils::Icons::BOUNDING_RECT.icon());
 
     addAction(m_showBoundingRectAction.data());