Persist selected toogles in Ensemble selector

[anders-kiaer]

We currently have this as default:

This is a good default for users going into Webviz, who intends to look at some of the more official simulation results (e.g. management).

For modelling team members however, a different combination is more useful where they can see all cases (and maybe only the ones they have created):

Today they have the freedom of choosing what they want, but their choice is not persisted when closing/opening the Ensemble dialog box.

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A good solution here might be:

• Let the current toggle persist when closing/opening the ensemble dialog box (i.e. current toggle setting persist throughout the session).
• When you open a new browser tab (i.e. start a new session), the default value would be the last value actively set by the user in a previous session, and stored in localStorage.

This pattern is similar to #499.