fix: fix MessageQueue._publish Otel span ending

Signed-off-by: Pavel Puchkov <ppuchkov@atlassian.com>

Author: 0x6368656174

src/publisher/message-queues.ts

@@ -173,12 +173,15 @@ export abstract class MessageQueue extends EventEmitter {
       throw e;
     } finally {
       messages.forEach(m => {
-        // We're finished with both the RPC and the whole publish operation,
-        // so close out all of the related spans.
-        rpcSpan?.end();
         tracing.PubsubEvents.publishEnd(m);
-        m.parentSpan?.end();
       });
+
+      // We're finished with both the RPC and the whole publish operation,
+      // so close out all of the related spans.
+      new Set(messages.map(m => m.parentSpan)).forEach(parentSpan => {
+        parentSpan?.end();
+      });
+      rpcSpan?.end();
     }
   }
 }