feat(ui): add infinite scroll pagination to chat completions/responses logs table

## Summary:

  This commit adds infinite scroll pagination to the
  chat completions and responses tables.


## Test Plan:
  1. Run unit tests: npm run test
  2. Manual testing: Navigate to chat
  completions/responses pages
  3. Verify infinite scroll triggers when approaching
  bottom
  4. Added playwright tests: npm run test:e2e

llama_stack/ui/app/logs/chat-completions/page.tsx

@@ -1,51 +1,7 @@
 "use client";
 
-import { useEffect, useState } from "react";
-import { ChatCompletion } from "@/lib/types";
 import { ChatCompletionsTable } from "@/components/chat-completions/chat-completions-table";
-import { client } from "@/lib/client";
 
 export default function ChatCompletionsPage() {
-  const [completions, setCompletions] = useState<ChatCompletion[]>([]);
-  const [isLoading, setIsLoading] = useState<boolean>(true);
-  const [error, setError] = useState<Error | null>(null);
-
-  useEffect(() => {
-    const fetchCompletions = async () => {
-      setIsLoading(true);
-      setError(null);
-      try {
-        const response = await client.chat.completions.list();
-        const data = Array.isArray(response)
-          ? response
-          : (response as { data: ChatCompletion[] }).data;
-
-        if (Array.isArray(data)) {
-          setCompletions(data);
-        } else {
-          console.error("Unexpected response structure:", response);
-          setError(new Error("Unexpected response structure"));
-          setCompletions([]);
-        }
-      } catch (err) {
-        console.error("Error fetching chat completions:", err);
-        setError(
-          err instanceof Error ? err : new Error("Failed to fetch completions"),
-        );
-        setCompletions([]);
-      } finally {
-        setIsLoading(false);
-      }
-    };
-
-    fetchCompletions();
-  }, []);
-
-  return (
-    <ChatCompletionsTable
-      data={completions}
-      isLoading={isLoading}
-      error={error}
-    />
-  );
+  return <ChatCompletionsTable paginationOptions={{ limit: 20 }} />;
 }