fix(chat): restore markdown list markers

The design-system pass swapped inline `listStyleType` for Tailwind
classes, but the edit that added `list-disc`/`list-decimal` silently did
not apply while the one removing the inline style did. With Preflight
setting `list-style: none`, every bullet and number in an assistant
response disappeared. `list-item` on the `li` sets display only, not the
marker type.

Author: waleedlatif1

apps/sim/app/(interfaces)/chat/components/message/components/markdown-renderer.tsx

@@ -53,10 +53,14 @@ const COMPONENTS = {
   ),
 
   ul: ({ children }: React.HTMLAttributes<HTMLUListElement>) => (
-    <ul className='mt-1 mb-1 space-y-1 pl-6 font-sans text-[var(--text-primary)]'>{children}</ul>
+    <ul className='mt-1 mb-1 list-disc space-y-1 pl-6 font-sans text-[var(--text-primary)]'>
+      {children}
+    </ul>
   ),
   ol: ({ children }: React.HTMLAttributes<HTMLOListElement>) => (
-    <ol className='mt-1 mb-1 space-y-1 pl-6 font-sans text-[var(--text-primary)]'>{children}</ol>
+    <ol className='mt-1 mb-1 list-decimal space-y-1 pl-6 font-sans text-[var(--text-primary)]'>
+      {children}
+    </ol>
   ),
   li: ({ children }: React.LiHTMLAttributes<HTMLLIElement>) => (
     <li className='list-item font-sans text-[var(--text-primary)]'>{children}</li>