Fix clang-tidy include-cleaner in Group test

TrentHouliston · cursoragent · TrentHouliston · commit 5612b90f8fbc · 2026-06-17T12:11:58.000+10:00
Co-authored-by: Cursor &lt;cursoragent@cursor.com&gt;
diff --git a/tests/tests/threading/Group.cpp b/tests/tests/threading/Group.cpp
@@ -33,6 +33,7 @@
 #include <set>
 #include <thread>
 #include <tuple>
+#include <utility>
 #include <vector>
 
 #include "id.hpp"
