feat(conditions): allow running check on retryable states

[Crocmagnon]

• What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)

This allows running check conditions on retryable states such as SERVER_ERROR, effectively giving better control to the execution flow.

A use case may be to retry only a couple times on specific non-critical steps.

This is a non-breaking change, the feature is only enable if a condition bears the specific boolean.

• What is the current behavior? (You can also link to an open issue here)

Check conditions aren't run on retryable states, preventing users from controlling the execution flow in case of 5xx errors.

• What is the new behavior (if this is a feature change)?

Check conditions marked with run_on_retryable will be evaluated even if the state is retryable.

• Does this PR introduce a breaking change? (What changes might users need to make in their application due to this PR?)

No.

• Other information:
  N/A