CDB3-3547 Missed digitalSignature (should be copied from asset, announcement)

https://procedure-sandbox.prozorro.sale/api/registry/assets/63b690e2e0de1086837c0aab
https://procedure-sandbox.prozorro.sale/api/jobber/announcements/jas/63b691c3a86b64e3a5c78726
https://procedure-sandbox.prozorro.sale/api/procedures/63b692f0d3422651dc6ed5dd

missed for procedure - 959a8bd30c0a4925a5cf57b668b644e2, 1700a32c9073407ead3e8cf33a118deb