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/RimWellPath.cpp

@@ -44,7 +44,6 @@
 #include "RimPerforationCollection.h"
 #include "RimProject.h"
 #include "RimStimPlanModelCollection.h"
-#include "RimTools.h"
 #include "RimValveCollection.h"
 #include "RimWellEventTimeline.h"
 #include "RimWellIASettingsCollection.h"
@@ -190,8 +189,7 @@ double RimWellPath::wellPathRadius( double characteristicCellSize ) const
 {
     double radius = characteristicCellSize * m_wellPathRadiusScaleFactor();
 
-    RimWellPathCollection* coll = RimTools::wellPathCollection();
-    if ( coll )
+    if ( auto coll = RimWellPathCollection::instance() )
     {
         radius *= coll->wellPathRadiusScaleFactor();
     }
@@ -492,6 +490,11 @@ void RimWellPath::fieldChangedByUi( const caf::PdmFieldHandle* changedField, con
     else
     {
         proj->scheduleCreateDisplayModelAndRedrawAllViews();
+
+        if ( auto wellPathCollection = RimWellPathCollection::instance() )
+        {
+            wellPathCollection->updateMswSegmentsForObject( this );
+        }
     }
 }
 
@@ -848,7 +851,7 @@ void RimWellPath::defineObjectEditorAttribute( QString uiConfigName, caf::PdmUiE
         // The nodes for well paths are created by the well path collection object. When a well path object is asked to
         // be updated in the project tree, always rebuild the tree from the well path collection object.
 
-        myAttr->objectForUpdateOfUiTree = RimTools::wellPathCollection();
+        myAttr->objectForUpdateOfUiTree = RimWellPathCollection::instance();
     }
 }