Force re-load of the event list when navigating out of it

[Simmanz]

Current state

After having loaded the event list in a park overview, going into another will display the previous park's event list. After a few seconds, it will change.

Objective

• Make the event list updated when navigating out of park overview.

[Simmanz]

This might be harder than originally planned because the navigation logic to navigate out of the parkOverview screen is defined in the topAppBar. I think that defining a callback could do the job, but I am not sure about clean ways to make this work yet.

[Simmanz]

What did not work

I set up a callback function (when exiting the parkOverview -> goBack() from navigationActions), it did :

• Reseting the current park (null)
• Emptying the ui state of the eventViewModel (Empty) to prevent the list from being wrongly displayed.

[Simmanz]

Overwriting directly the uiState inside the composable

This did make the event list be un-loaded (can see the changes just before the navigation exits the screen), but when loading a new parkOverview, the older event list (that got reset) is still being displayed at the start !