parse
Parses the transactionEventsXdr field from a list of base64-encoded XDR strings to a list of typed TransactionEvent objects.
Transaction events are associated with the transaction as a whole rather than individual contract invocations. Each TransactionEvent contains:
stage: The stage at which the event occurred (e.g., during execution or finalization)
event: The actual ContractEvent data
Return
A list of parsed TransactionEvent XDR objects, or null if no transaction events exist.
Throws
if any XDR string is malformed or cannot be decoded.