ProjectExplorer: Let KitAspect pre-select a settings page item

... when the "Manage" button is clicked.
Make use of this in the device settings page.

Fixes: QTCREATORBUG-25077
Change-Id: I1173a72d4c538c839c3e8df278a698b74bd6fca2
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: hjk <hjk@qt.io>

src/plugins/projectexplorer/kitaspects.cpp

@@ -897,6 +897,8 @@ private:
 
     void makeReadOnly() override { m_comboBox->setEnabled(false); }
 
+    Id settingsPageItemToPreselect() const override { return DeviceKitAspect::deviceId(m_kit); }
+
     void refresh() override
     {
         m_model->setTypeFilter(DeviceTypeKitAspect::deviceTypeId(m_kit));