LanguageClient: ensure the outline is expanded after an update

Task-number: QTCREATORBUG-32218
Change-Id: I8d2e7d45f00025a11307ae40a2870bfcf6102dc7
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/plugins/languageclient/languageclientoutline.cpp

@@ -234,6 +234,7 @@ void LanguageClientOutlineWidget::handleResponse(const DocumentUri &uri,
         m_model.setInfo(*s);
     else
         m_model.clear();
+    m_view.expandAll();
 
     // The list has changed, update the current items
     updateSelectionInTree(m_editor->textCursor());