Layouting: Handle attach types via setter

Change-Id: I862f5cd109db3582b4f029787ec0cded2da39ce6
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

src/plugins/texteditor/codestyleselectorwidget.cpp

@@ -59,8 +59,8 @@ CodeStyleSelectorWidget::CodeStyleSelectorWidget(ICodeStylePreferencesFactory *f
             m_exportButton,
             m_importButton
         },
-
-    }.attachTo(this, WithoutMargins);
+        noMargin,
+    }.attachTo(this);
 
     connect(m_delegateComboBox, &QComboBox::activated,
             this, &CodeStyleSelectorWidget::slotComboBoxActivated);