ClangFormat: Fix settings checkboxes disappearance

- Fixed settings checkboxes disappearance after open a project
- Fixed impossibility to save settings

Task-number: QTCREATORBUG-26948
Change-Id: Ia73a61bf56b99adea9ed45c9d656860b185a3d7e
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>

src/plugins/texteditor/codestyleeditor.h

@@ -33,6 +33,7 @@ QT_BEGIN_NAMESPACE
 class QVBoxLayout;
 QT_END_NAMESPACE
 
+namespace ProjectExplorer { class Project; }
 namespace TextEditor {
 
 class ICodeStylePreferencesFactory;
@@ -44,7 +45,9 @@ class TEXTEDITOR_EXPORT CodeStyleEditor : public CodeStyleEditorWidget
     Q_OBJECT
 public:
     CodeStyleEditor(ICodeStylePreferencesFactory *factory,
-                           ICodeStylePreferences *codeStyle, QWidget *parent = nullptr);
+                    ICodeStylePreferences *codeStyle,
+                    ProjectExplorer::Project *project = nullptr,
+                    QWidget *parent = nullptr);
 
 private:
     void updatePreview();