Fixes a set of related bugs affecting ensemble contour maps that use a GENERATED (grid calculation) result, plus a related bug where switching a view's case lost generated results.
A static property with an active dynamic filter now produces a contour map per time step. Adds a synthetic ensemble fixture with unified restart files, as the OPM reader used for statistics does not support per-step restart files.
Replace the built-in formation filter with ensemble data filters. Load ensemble data filters after project read, and parent new views before assigning the case so the ensemble filter collection is resolved correctly.