feat(aws-sns): Switch AWS SNS to default propagator (like AWS SNS 2)

Author: PerfectSlayer

dd-java-agent/instrumentation/aws-java-sns-1.0/src/main/java/datadog/trace/instrumentation/aws/v1/sns/SnsInterceptor.java

@@ -14,7 +14,7 @@
 import com.amazonaws.services.sns.model.PublishBatchRequest;
 import com.amazonaws.services.sns.model.PublishBatchRequestEntry;
 import com.amazonaws.services.sns.model.PublishRequest;
-import datadog.trace.api.TracePropagationStyle;
+import datadog.context.propagation.Propagators;
 import datadog.trace.bootstrap.ContextStore;
 import datadog.trace.bootstrap.instrumentation.api.AgentSpan;
 import datadog.trace.bootstrap.instrumentation.api.AgentTracer;
@@ -37,12 +37,7 @@ private ByteBuffer getMessageAttributeValueToInject(
     final AgentSpan span = newSpan(request);
     StringBuilder jsonBuilder = new StringBuilder();
     jsonBuilder.append('{');
-    propagate()
-        .inject(
-            span,
-            jsonBuilder,
-            SETTER,
-            TracePropagationStyle.DATADOG); // TODO Is forcing Datadog encoding on purpose?
+    Propagators.defaultPropagator().inject(span, jsonBuilder, SETTER);
     if (traceConfig().isDataStreamsEnabled()) {
       propagate().injectPathwayContext(span, jsonBuilder, SETTER, getTags(snsTopicName));
     }