chore(metrics): summable reth_info value (#9679)

Co-authored-by: Oliver <onbjerg@users.noreply.github.com>

crates/node/core/src/metrics/version_metrics.rs

@@ -45,6 +45,7 @@ impl VersionInfo {
             ("build_profile", self.build_profile),
         ];
 
-        let _gauge = gauge!("info", &labels);
+        let gauge = gauge!("info", &labels);
+        gauge.set(1)
     }
 }