Fix AI chat scroll behavior (#15686)

packages/twenty-front/src/modules/ai/hooks/useAgentChatScrollToBottom.ts

@@ -0,0 +1,23 @@
+import { AI_CHAT_SCROLL_WRAPPER_ID } from '@/ai/constants/AiChatScrollWrapperId';
+import { useScrollWrapperHTMLElement } from '@/ui/utilities/scroll/hooks/useScrollWrapperHTMLElement';
+import { isDefined } from 'twenty-shared/utils';
+
+export const useAgentChatScrollToBottom = () => {
+  const { getScrollWrapperElement } = useScrollWrapperHTMLElement(
+    AI_CHAT_SCROLL_WRAPPER_ID,
+  );
+
+  const scrollToBottom = () => {
+    const { scrollWrapperElement } = getScrollWrapperElement();
+    if (!isDefined(scrollWrapperElement)) {
+      return;
+    }
+
+    scrollWrapperElement.scrollTo({
+      top: scrollWrapperElement.scrollHeight,
+      behavior: 'smooth',
+    });
+  };
+
+  return { scrollToBottom };
+};