don't re-disable the OpenTelemetry global if it has already been set/disabled. Fix for evmtool usage (#4721)

Signed-off-by: garyschulte <garyschulte@gmail.com>

metrics/core/src/main/java/org/hyperledger/besu/metrics/MetricsSystemFactory.java

@@ -22,6 +22,8 @@ import org.hyperledger.besu.metrics.opentelemetry.OpenTelemetrySystem;
 import org.hyperledger.besu.metrics.prometheus.MetricsConfiguration;
 import org.hyperledger.besu.metrics.prometheus.PrometheusMetricsSystem;
 
+import java.util.concurrent.atomic.AtomicBoolean;
+
 import io.opentelemetry.api.GlobalOpenTelemetry;
 import io.opentelemetry.api.OpenTelemetry;
 import org.slf4j.Logger;
@@ -31,12 +33,15 @@ import org.slf4j.LoggerFactory;
 public class MetricsSystemFactory {
 
   private static final Logger LOG = LoggerFactory.getLogger(MetricsSystemFactory.class);
+  private static final AtomicBoolean globalOpenTelemetryDisabled = new AtomicBoolean(false);
 
   private MetricsSystemFactory() {}
 
   private static void disableGlobalOpenTelemetry() {
+    if (!globalOpenTelemetryDisabled.compareAndExchange(false, true)) {
       GlobalOpenTelemetry.set(OpenTelemetry.noop());
     }
+  }
 
   /**
    * Creates and starts a new metric system to observe the behavior of the client