Apply clang-format to all test files

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

qt6-after/qt6-migrated-benchmark/tests/test_lts_app_descriptor.cpp

@@ -1,6 +1,7 @@
 #include "lts_app_descriptor.h"
-#include <QJsonObject>
+
 #include <QJsonArray>
+#include <QJsonObject>
 #include <QString>
 #include <QStringList>
 #include <QtTest/QtTest>
@@ -12,7 +13,7 @@ class TestLtsAppDescriptor : public QObject
 {
     Q_OBJECT
 
-private slots:
+  private slots:
     void testPluginInfoCreation();
     void testPluginInfoFlagOperations();
     void testAppDescriptionDefaultConstruction();