FIX: Handle missing history output in Driver interface instead of Integration core

Author: ayush4874

SU2_CFD/include/drivers/CDriverBase.hpp

@@ -116,7 +116,13 @@ class CDriverBase {
    * \return Value of the output.
    */
   inline passivedouble GetOutputValue(const std::string& output_name) const {
-    return SU2_TYPE::GetValue(output_container[MESH_0]->GetHistoryFieldValue(output_name));
+    const auto& list = output_container[MESH_0]->GetHistoryOutputList();
+    for (const auto& val : list) {
+       if (val == output_name) {
+          return SU2_TYPE::GetValue(output_container[MESH_0]->GetHistoryFieldValue(output_name));
+       }
+    }
+    return 0.0; 
   }
 
   /*!