fix(aws-lambda): Avoid overwriting root span name

Author: Lms24

packages/aws-serverless/src/sdk.ts

@@ -220,10 +220,7 @@ function enhanceScopeWithEnvironmentData(scope: Scope, context: Context, startTi
  * @param context AWS Lambda context that will be used to extract some part of the data
  */
 function enhanceScopeWithTransactionData(scope: Scope, context: Context): void {
-  scope.addEventProcessor(event => {
-    event.transaction = context.functionName;
-    return event;
-  });
+  scope.setTransactionName(context.functionName);
   scope.setTag('server_name', process.env._AWS_XRAY_DAEMON_ADDRESS || process.env.SENTRY_NAME || hostname());
   scope.setTag('url', `awslambda:///${context.functionName}`);
 }