Rollback for all retry exceptions (#40882)

[jmaicher]

In #19856, we added DBAPIError besides OperationalError to the retry exception types, but did not change the retry_db_transaction decorator to rollback transaction after failures and before a retry.

In certain cases (see #40882), this is needed as otherwise all retries will fail when the current session/transaction was "poisened" by the initial error.

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[potiuk]

Thanks! rare case, good catch!

[boring-cyborg]

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