fix(mousewheel): fix issue with event handling after Swiper was destroyed

fixes #7654

Author: nolimits4web

src/modules/mousewheel/mousewheel.mjs

@@ -363,6 +363,7 @@ export default function Mousewheel({ swiper, extendParams, on, emit }) {
             lastEventBeforeSnap = newEvent;
             recentWheelEvents.splice(0);
             timeout = nextTick(() => {
+              if (swiper.destroyed || !swiper.params) return;
               swiper.slideToClosest(swiper.params.speed, true, undefined, snapToThreshold);
             }, 0); // no delay; move on next tick
           }
@@ -371,6 +372,7 @@ export default function Mousewheel({ swiper, extendParams, on, emit }) {
             // we'll consider a scroll "complete" when there haven't been any wheel events
             // for 500ms.
             timeout = nextTick(() => {
+              if (swiper.destroyed || !swiper.params) return;
               const snapToThreshold = 0.5;
               lastEventBeforeSnap = newEvent;
               recentWheelEvents.splice(0);