workload/roachtest: implement `--tolerate-retry-errors`

A number of existing roachtests execute workload(s) with `--tolerate-errors` while at the same time incorrectly assuming that the workload(s) will do something useful. Since `--tolerate-errors` is indiscriminate wrt to the type of error, i.e., it ignores all of them, this implies that in the worst case, it's tantamount to `assert true`. Instead, most, if not all, of these roachtests could be strengthened to use `--tolerate-retry-errors` which would skip _only_ the errors concerning transaction retries [1]; these are colloquially known as "ambiguous errors" [2].

[1] https://www.cockroachlabs.com/docs/stable/transaction-retry-error-reference
[2] https://github.com/cockroachdb/cockroach/issues/107571

Jira issue: CRDB-48005