[Datacite mapping] include the older datacite prefixed OpenAIRE id among the originalId[]

dhp-workflows/dhp-aggregation/src/main/scala/eu/dnetlib/dhp/datacite/DataciteToOAFTransformation.scala

@@ -584,7 +584,12 @@ object DataciteToOAFTransformation {
       JField("awardUri", JString(awardUri)) <- fundingReferences
     } yield awardUri
 
+    val oid = result.getId
     result.setId(IdentifierFactory.createIdentifier(result))
+    if (!result.getId.equalsIgnoreCase(oid)) {
+      result.getOriginalId.add(oid)
+    }
+
     var relations: List[Relation] =
       awardUris.flatMap(a => get_projectRelation(a, result.getId)).filter(r => r != null)