[SELC-4374] feat: Added filter status for onboarding search (#314)

Author: pierpaolodidato89

apps/onboarding-ms/src/main/java/it/pagopa/selfcare/onboarding/service/OnboardingServiceDefault.java

@@ -301,7 +301,7 @@ private Uni<Onboarding> addReferencedOnboardingId(Onboarding onboarding) {
                 onboarding.getInstitution().getSubunitCode(),
                 onboarding.getInstitution().getOrigin().name(),
                 onboarding.getInstitution().getOriginId(),
-                null,
+                OnboardingStatus.COMPLETED,
                 onboarding.getProductId()
         );
         Document query = QueryUtils.buildQuery(queryParameter);