add TODO comment

Author: lucaspimentel

dd-trace-core/src/main/java/datadog/trace/core/propagation/HttpCodec.java

@@ -233,6 +233,7 @@ public <C> TagContext extract(
             context = extractedContext;
             // Stop extraction if only extracting first valid context and drop everything else
             if (this.extractFirst) {
+              // TODO: change this logic to always extract baggage
               break;
             }
           }