feat(45-03): trigger dimming recompute for Conditional Switch rule updates

- Extend updateNodeData to check for conditionalSwitch type
- Recompute dimming when 'rules' data changes
- Pattern: conditionalSwitch updateNodeData → rules updated → recomputeDimmedNodes()

Ensures dimming updates reactively when:
1. Component useEffect updates match status (reactive)
2. Execution pipeline updates rules with fresh match results

Completes Phase 45 Plan 03 integration.

src/store/workflowStore.ts

@@ -536,10 +536,13 @@ const workflowStoreImpl: StateCreator<WorkflowStore> = (set, get) => ({
       ) as WorkflowNode[],
       hasUnsavedChanges: true,
     }));
-    // Recompute dimming if this is a switch node and switches data changed
+    // Recompute dimming if this is a switch or conditionalSwitch node and their control data changed
     if (node?.type === "switch" && "switches" in data) {
       get().recomputeDimmedNodes();
     }
+    if (node?.type === "conditionalSwitch" && "rules" in data) {
+      get().recomputeDimmedNodes();
+    }
   },
 
   removeNode: (nodeId: string) => {