[bug]: autoScroll behavior on message-scroller

### Describe the bug i think it's a bug anyway. Basically if i set autoScroll on the `MessageScrollerProvider` then it no longer sends a new message to the top of the viewport. I want both behaviors - new message goes to top of view and, unless the user intervenes, stream follows the live edge. ### Affected component/components message-scroller ### How to reproduce new message goes to top of viewport, but it will no longer treat the chat as being at the live edge. ```jsx <MessageScrollerProvider defaultScrollPosition="end" scrollPreviousItemPeek={0} scrollMargin={8} > <Chat {...props} /> </MessageScrollerProvider> ``` new message does not go to top of viewport, but follows the stream at the live edge. ```jsx <MessageScrollerProvider autoScroll defaultScrollPosition="end" scrollPreviousItemPeek={0} scrollMargin={8} > <Chat {...props} /> </MessageScrollerProvider> ``` ### Codesandbox/StackBlitz link _No response_ ### Logs ```bash ``` ### System Info ```bash mac, chrome, "@shadcn/react": "^0.2.0" ``` ### Before submitting - [x] I've made research efforts and searched the documentation - [x] I've searched for existing issues