[TRIVIAL] Improve logs for created ethflow orders (#3015)

# Description
It annoys me to no end that you have to search different words for order
creation depending on whether it was indexed by the autopilot or
submitted by the user via the orderbook.
I don't know how much time I already wasted searching for ethflow orders
because these logs are different!
**rant over**

# Changes
Makes the onchain order indexing log use the same words as the
orderbook.

crates/autopilot/src/database/onchain_order_events.rs

@@ -349,7 +349,7 @@ impl<T: Send + Sync + Clone, W: Send + Sync> OnchainOrderParser<T, W> {
             tracing::debug!(?order, "invalidated order");
         }
         for (order, quote) in orders.iter().zip(quotes.iter()) {
-            tracing::debug!(order =? order.uid, ?quote, "upserted order");
+            tracing::debug!(order =? order.uid, ?quote, "order created");
         }
 
         Ok(())