fix: price chart crash when undefined price point (#4763)

fix price chart crash

src/components/Tokens/TokenDetails/PriceChart.tsx

@@ -251,8 +251,10 @@ export function PriceChart({ width, height, prices }: PriceChartProps) {
         pricePoint = x0.valueOf() - d0.timestamp.valueOf() > d1.timestamp.valueOf() - x0.valueOf() ? d1 : d0
       }
 
+      if (pricePoint) {
         setCrosshair(timeScale(pricePoint.timestamp))
         setDisplayPrice(pricePoint)
+      }
     },
     [timeScale, prices]
   )