API-27427-500-errors-claims-status-v2 (#12994)

* Adds safe return with dig

* Adds a return of an empty object in the case of a rescue due to EVSS outage

modules/claims_api/app/controllers/claims_api/v2/veterans/claims_controller.rb

@@ -499,6 +499,7 @@ def get_evss_documents(claim_id)
           log_message_to_sentry('Error in Claims v2 show calling EVSS Doc Service',
                                 :error,
                                 body: e.message)
+          {}
         end
 
         def build_supporting_docs(bgs_claim)
@@ -511,7 +512,7 @@ def build_supporting_docs(bgs_claim)
                  else
                    get_evss_documents(bgs_claim[:benefit_claim_details_dto][:benefit_claim_id])
                  end
-          return [] if docs.nil? || docs['documents'].blank?
+          return [] if docs.nil? || docs&.dig('documents').blank?
 
           @supporting_documents = docs['documents']