Describe the current behavior

When the RAO returns a OneStateOnlyRaoResultImpl RAO Result, any result query based on a state different from the optimization state will lead to an exception.

However, it is possible tha ta CRAC file contains a CRA and no curative CNECs.

To avoid throwing exceptions, it would be better to return default values when the methods are called on a state different from the optimization state.

Describe the expected behavior

Update the class to return default values.

Describe the motivation

No response

Extra Information

No response