Apply clang-format to all test files

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

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

@@ -1,4 +1,16 @@
 #include <gtest/gtest.h>
-TEST(mainwindowTest, CompilationStub) { EXPECT_TRUE(true); }
-TEST(mainwindowTest, Qt6ApiCompatibility) { EXPECT_TRUE(true); }
-TEST(mainwindowTest, BasicFunctionality) { EXPECT_TRUE(true); }
+
+TEST(mainwindowTest, CompilationStub)
+{
+    EXPECT_TRUE(true);
+}
+
+TEST(mainwindowTest, Qt6ApiCompatibility)
+{
+    EXPECT_TRUE(true);
+}
+
+TEST(mainwindowTest, BasicFunctionality)
+{
+    EXPECT_TRUE(true);
+}