add @SuppressWarnings(HidingField) annotation (#5603)

apm-application-toolkit/apm-toolkit-micrometer-registry/src/main/java/org/apache/skywalking/apm/meter/micrometer/SkywalkingDistributionSummary.java

@@ -33,6 +33,7 @@ import java.util.concurrent.atomic.DoubleAccumulator;
 /**
  * Combine the meters to {@link io.micrometer.core.instrument.DistributionSummary}
  */
+@SuppressWarnings("HidingField")
 public class SkywalkingDistributionSummary extends AbstractDistributionSummary {
 
     /**

apm-application-toolkit/apm-toolkit-micrometer-registry/src/main/java/org/apache/skywalking/apm/meter/micrometer/SkywalkingTimer.java

@@ -32,6 +32,7 @@ import java.util.Optional;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.DoubleAccumulator;
 
+@SuppressWarnings("HidingField")
 public class SkywalkingTimer extends AbstractTimer {
 
     /**