Fix auto scroll bug: (#74)

Fixes a small bug where sending the first message to an agent would
cause the component to overscroll like this:

<img width="1165" height="203" alt="image"
src="https://github.com/user-attachments/assets/68ddd244-b0b0-448a-a7b2-784cadcd29a2"
/>

Author: MichaelSun48

agentex-ui/components/primary-content/chat-view.tsx

@@ -63,7 +63,7 @@ export function ChatView({
         ref={headerRef}
       />
 
-      <div className="flex min-h-full w-full flex-col items-center px-4 sm:px-6 md:px-8">
+      <div className="flex w-full flex-col items-center px-4 sm:px-6 md:px-8">
         <div className="w-full max-w-3xl">
           <TaskProvider taskId={taskID}>
             <TaskMessages taskId={taskID} headerRef={headerRef} />