#14439 Create 2D intersection views for views in a grid ensemble

[magnesj]

Fixes #14439

Problem

Rim2dIntersectionViewCollection::syncFromExistingIntersections() collected the intersections to create 2D views for by walking the PDM child tree of the case:

parentCase->descendantsIncludingThisOfType<RimExtrudedCurveIntersection>();

This only works when the 3D view is a child of the case. Views located in RimReservoirGridEnsemble::m_viewCollection, RimEclipseCaseEnsemble::m_viewCollection or RimOilField::eclipseViewCollection are not, so no Rim2dIntersectionView was created, RimExtrudedCurveIntersection::correspondingIntersectionView() returned nullptr and "Show 2D Intersection View" did nothing. This is also the root cause of the crash in #14379, which was only guarded against in febea598dc.

Changes

Rim2dIntersectionViewCollection

• Build the intersection list from the grid views that display the case instead of from PDM descendants of the case. A file local gridViewsForCase() starts from RimCase::gridViews() and adds the views of the owning RimEclipseCaseEnsemble / RimReservoirGridEnsemble view collection, filtered on ownerCase().
• Update the connected editors of the owning grid ensemble after sync, so the new tree node shows up.

RimReservoirGridEnsemble

• Added defineUiTreeOrdering() placing the non-empty "2D Intersection Views" collections of the member cases directly under the ensemble, right after "Views". Only active for MainWindow.ProjectTree, other tree configurations keep the default children.

RimEclipseCase

• Do not add m_2dIntersectionViewCollection under the case node when the case belongs to a RimReservoirGridEnsemble, to avoid showing the same object twice in the project tree.

Not addressed

RimEclipseCase::reservoirViews() still does not report views located in an ensemble view collection, so RimCase::views() and RimProject::allViews() remain incomplete for ensemble views. Fixing that would likely repair this and other features at once, but is a considerably broader behavioural change.

Draft: builds clean and the unit tests pass, but the tree placement and the "Show 2D Intersection View" action have not been verified interactively on an ensemble project yet.