ClangFormat: Fix unsaving properties for global settings

- Fixed behavior "Formatting mode" combobox settings isn't
saved after pressing "Ok" button when no one project is
open. Now it works as expected, settings save after press
"Ok" button.
- Added additional applying interface for ICodeStylePreferenceFactory
which allows pass-through apply call from dialog to the editor.

Note: it doesn't work with read-only code style profiles

Change-Id: If4f0c85e3105550db4ffd9860e94b678f0d9b386
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

src/plugins/qmljstools/qmljscodestylepreferencesfactory.cpp

@@ -71,8 +71,9 @@ TextEditor::ICodeStylePreferences *QmlJSCodeStylePreferencesFactory::createCodeS
     return new TextEditor::SimpleCodeStylePreferences();
 }
 
-QWidget *QmlJSCodeStylePreferencesFactory::createEditor(TextEditor::ICodeStylePreferences *preferences,
-                                                           QWidget *parent) const
+TextEditor::CodeStyleEditorWidget *QmlJSCodeStylePreferencesFactory::createEditor(
+    TextEditor::ICodeStylePreferences *preferences,
+    QWidget *parent) const
 {
     auto widget = new Internal::QmlJSCodeStylePreferencesWidget(parent);
     widget->layout()->setContentsMargins(0, 0, 0, 0);