Evaluate ensemble does not always autopopulate active realizations

[oyvindeide]

Not sure how to reproduce at the moment, but a user had a case where just one realization failed, it had status: LOAD_FAILURE. in Experiment manager. It showed up in Evaluate ensemble, but all realizations where shown in the Active realizations field.

Should be:

• If no realizations failed, it should default to empty
• If some realizations failed, they should populate the field
• If all realizations have parameters but no responses, all should be defaulted as active

[oyvindeide]

Think I figured out why, the user had two different ensembles with the same name, and we get_ensemble_by_name, which means we don't necessarily populate the right realizations.

[dafeda]

This might be fixed by #7995

[oyvindeide]

Tested, and confirmed to work as expected.