Extends the existing single-curve auto axis assignment (unit and summary vector matching, then alternating left/right) to also cover RimEnsembleCurveSet. Previously ensemble curve sets were always placed on the default left axis, so e.g. FOPT and FOPR ensembles ended up on the same axis despite differing units.
- Add RimEnsembleCurveSet::unitNameY(), looked up from the first available summary case reader in the ensemble.
- Move X and Y axis assignment from RimSummaryPlot to new RimSummaryPlotTools. Y-axis assignment takes a RiaSummaryAddressModifier::CurveAddressProvider, and compares against both curves and curve sets in the plot.
- RimEnsembleCurveSetCollection::addCurveSet gains an autoAssignPlotAxis flag (default true, matching addCurveAndUpdate for single curves).
Also fixes a bug in the summary plot editor where ensemble curve sets manually assigned to different Y-axes collapsed onto the same axis when clicking OK. The PdmPtrField axis reference does not resolve across the cloned preview and target plots. Add RimEnsembleCurveSet::findOrAssignLeftOrRightAxisY() to capture and re-apply the axis explicitly.
Add RimSummaryPlot-Test.cpp with unit tests for axis auto-assignment of curves and ensemble curve sets.
Fixes#14728
Magne Sjaastad
044454b9b1