Update chat.tsx

app/components/chat.tsx

@@ -937,7 +937,7 @@ function _Chat() {
     const isTouchTopEdge = e.scrollTop <= edgeThreshold;
     const isTouchBottomEdge = bottomHeight >= e.scrollHeight - edgeThreshold;
     const isHitBottom =
-      bottomHeight >= e.scrollHeight - (isMobileScreen ? 0 : 10);
+      bottomHeight >= e.scrollHeight - (isMobileScreen ? 4 : 10);
 
     const prevPageMsgIndex = msgRenderIndex - CHAT_PAGE_SIZE;
     const nextPageMsgIndex = msgRenderIndex + CHAT_PAGE_SIZE;