Convert initial_shares_authorized value to DAML tagged union format. V30 DAML contracts use OcfInitialSharesAuthorized union type:
Native value (number, numeric string, or "UNLIMITED"/"NOT_APPLICABLE")
DAML-formatted discriminated union
Convert initial_shares_authorized value to DAML tagged union format. V30 DAML contracts use OcfInitialSharesAuthorized union type: