src: add missing cmath include to traced_value.cc

Fixes: #21903

PR-URL: #21924
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Jon Moss <me@jonathanmoss.me>
Reviewed-By: Minwoo Jung <minwoo@nodesource.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Сковорода Никита Андреевич <chalkerx@gmail.com>

Author: addaleax

src/tracing/traced_value.cc

@@ -4,7 +4,7 @@
 
 #include "tracing/traced_value.h"
 
-#include <math.h>
+#include <cmath>
 #include <sstream>
 #include <stdio.h>
 #include <string>