Fix webtoon viewer showing transition view when going to next/prev chapter using next/prev button (#7133)

(cherry picked from commit b21bcc2d45859ea86d6042b5df9d7c6f30d259cc)

app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/webtoon/WebtoonViewer.kt

@@ -245,7 +245,7 @@ class WebtoonViewer(val activity: ReaderActivity, val isContinuous: Boolean = tr
         logcat { "moveToPage" }
         val position = adapter.items.indexOf(page)
         if (position != -1) {
-            recycler.scrollToPosition(position)
+            layoutManager.scrollToPositionWithOffset(position, 0)
             if (layoutManager.findLastEndVisibleItemPosition() == -1) {
                 onScrolled(pos = position)
             }