Refs #22901. Handle is_serialized_key in DDSFilterExpression.

Signed-off-by: Miguel Company <miguelcompany@eprosima.com>

Author: MiguelCompany

src/cpp/fastdds/topic/DDSSQLFilter/DDSFilterExpression.cpp

@@ -50,6 +50,12 @@ bool DDSFilterExpression::evaluate(
     using namespace eprosima::fastdds::dds::xtypes;
     using namespace eprosima::fastcdr;
 
+    // Always pass filter for key-only payloads
+    if (payload.is_serialized_key)
+    {
+        return true;
+    }
+
     dyn_data_->clear_all_values();
     try
     {