Update therapeutic range settings add toggle

src/App.tsx

@@ -108,6 +108,7 @@ const MedPlanAssistant = () => {
               chartView={chartView}
               showDayTimeOnXAxis={showDayTimeOnXAxis}
               showDayReferenceLines={showDayReferenceLines}
+              showTherapeuticRange={uiSettings.showTherapeuticRange ?? true}
               therapeuticRange={therapeuticRange}
               simulationDays={simulationDays}
               displayedDays={displayedDays}