As part of WT-8869 WiredTiger change the default to allow rollback of read-only transactions when there is too much cache pressure. We should update test_timestamp_abort to expect such rollback requests and proceed correctly.
A similar change was made to test_random_abort as part of WT-8966.
duplicates
WT-9661Add retry on rollback for insert cursor API call
Closed
is related to
WT-7808test_schema_abort failed with invalid argument error