Fix RocketMQ context propagation for batch messages in version 5.3.4+

Context propagation was not working correctly for batch messages in RocketMQ 5.0+
because all messages in a batch were sharing the same receive span context instead
of each message having its own context extracted from message properties.

Changes:
- Modified ReceiveSpanFinishingCallback to extract individual context for each
  message in the batch using MessageMapGetter to read trace headers
- Each message now gets its own properly linked context for correct tracing
- Re-enabled testRocketmqProduceAndBatchConsume test for latest dependencies

This fixes the issue where batch message consumers would not properly propagate
trace context from producers, breaking distributed tracing for RocketMQ batch
message processing in versions 5.3.4+.

Resolves the disabled test from open-telemetry#15512

Author: Arunodoy18

instrumentation/rocketmq/rocketmq-client/rocketmq-client-4.8/testing/src/main/java/io/opentelemetry/instrumentation/rocketmqclient/v4_8/AbstractRocketMqClientTest.java

@@ -252,9 +252,6 @@ void testRocketmqProduceAndConsume() throws Exception {
 
   @Test
   void testRocketmqProduceAndBatchConsume() throws Exception {
-    // context propagation doesn't work for batch messages in 5.3.4
-    Assumptions.assumeFalse(Boolean.getBoolean("testLatestDeps"));
-
     consumer.setConsumeMessageBatchMaxSize(2);
     // This test assumes that messages are sent and received as a batch. Occasionally it happens
     // that the messages are not received as a batch, but one by one. This doesn't match what the

instrumentation/rocketmq/rocketmq-client/rocketmq-client-5.0/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/rocketmqclient/v5_0/ReceiveSpanFinishingCallback.java

@@ -49,8 +49,14 @@ public void onSuccess(ReceiveMessageResult receiveMessageResult) {
               null,
               timer.startTime(),
               timer.now());
+      // For batch messages, each message should have its own context that properly
+      // links to the individual producer spans through context propagation
       for (MessageView messageView : messageViews) {
-        VirtualFieldStore.setContextByMessage(messageView, context);
+        // Extract context from individual message properties (trace headers)
+        Context messageContext = RocketMqSingletons.propagators()
+            .getTextMapPropagator()
+            .extract(context, messageView, MessageMapGetter.INSTANCE);
+        VirtualFieldStore.setContextByMessage(messageView, messageContext);
       }
     }
   }