Revert "Replace signal blocking with orphan QTreeWidgetItem"

This reverts commit 7309f240.

addons/search/plugin_search.cpp

@@ -977,9 +977,8 @@ void KatePluginSearchView::matchFound(const QString &url, const QString &fName,
     QStringList row;
     row << i18n("Line: <b>%1</b> Column: <b>%2</b>: %3", startLine + 1, startColumn + 1, pre + QStringLiteral("<b>") + match + QStringLiteral("</b>") + post);
 
-    TreeWidgetItem *item = new TreeWidgetItem(rootFileItem(url, fName), row);
+    TreeWidgetItem *item = new TreeWidgetItem(static_cast<TreeWidgetItem*>(nullptr), row);
 
-    m_curResults->tree->model()->blockSignals(true);
     item->setData(0, ReplaceMatches::FileUrlRole, url);
     item->setData(0, Qt::ToolTipRole, url);
     item->setData(0, ReplaceMatches::FileNameRole, fName);
@@ -992,7 +991,7 @@ void KatePluginSearchView::matchFound(const QString &url, const QString &fName,
     item->setData(0, ReplaceMatches::EndLineRole, endLine);
     item->setData(0, ReplaceMatches::EndColumnRole, endColumn);
     item->setCheckState(0, Qt::Checked);
-    m_curResults->tree->model()->blockSignals(false);
+    rootFileItem(url, fName)->addChild(item);
 
     m_curResults->matches++;
 }