Make Executor.default_failure_handling better again
Make Executor.default_failure_handling better again

Mark the decision as handled, so caller don't need to do it.

Signed-off-by: Yves Bastide <3b1fe340dba76bf37270abad774f327f50b5e1d8@botify.com>

botify-labs/simpleflow,botify-labs/simpleflow