Implement Infinite Scrolling for Order Book History

[Fatimasanusi]

The current order book history page loads all past transactions at once, causing significant performance degradation on the client side for heavily traded assets.

Acceptance Criteria:

• Integrate React Query's useInfiniteQuery or Apollo's fetchMore.
• Implement an intersection observer to trigger fetches when scrolling to the bottom of the list.
• Update the GraphQL getOrderHistory resolver to accept limit and cursor arguments.