Function write_route_rate_limit_middleware 

pub async fn write_route_rate_limit_middleware(
    __arg0: State<RateLimitState>,
    req: Request,
    next: Next,
) -> Response

Combined middleware for write routes that applies appropriate rate limit based on the request path and method.

Must be applied AFTER signature middleware (needs SignerContext).

Rate limit mapping:

• POST /order, PUT /order -> OrderPlacement
• DELETE /order, DELETE /order_cloid -> OrderCancellation
• All other write routes -> ApiRequest