Auto-update MSW segments on UI changes (opt-in)

Adds an 'Auto Update Segments' toggle (default: on) to the MSW Segment
Visualization group in WellPathCollection. When enabled, MSW segments
are automatically recomputed and redrawn whenever the user modifies:
- Well path geometry or targets
- Perforation intervals
- Fishbone laterals
- Fractures
- Well path fields

The update is triggered via a new updateMswSegmentsForObject()
method, which resolves the top-level well from the changed object, clears
existing segments for all lateral wells in that group, recomputes segments
using updateSegments(), and schedules a full redraw.

When auto-update is disabled, an 'Update Segments' button is shown
instead, allowing manual control.

ApplicationLibCode/ProjectDataModel/WellPath/RimWellPathGeometryDef.cpp

@@ -32,6 +32,7 @@
 
 #include "RimModeledWellPath.h"
 #include "RimProject.h"
+#include "RimWellPathCollection.h"
 #include "RimWellPathGeometryDefTools.h"
 #include "RimWellPathTarget.h"
 
@@ -552,6 +553,22 @@ void RimWellPathGeometryDef::fieldChangedByUi( const caf::PdmFieldHandle* change
     }
 
     changed.send( false );
+
+    if ( auto wellPathCollection = RimWellPathCollection::instance() )
+    {
+        wellPathCollection->updateMswSegmentsForObject( this );
+    }
+}
+
+//--------------------------------------------------------------------------------------------------
+///
+//--------------------------------------------------------------------------------------------------
+void RimWellPathGeometryDef::childFieldChangedByUi( const caf::PdmFieldHandle* changedChildField )
+{
+    if ( auto wellPathCollection = RimWellPathCollection::instance() )
+    {
+        wellPathCollection->updateMswSegmentsForObject( this );
+    }
 }
 
 //--------------------------------------------------------------------------------------------------