cmd/faucet: sort requests by newest first (#22018)

cmd/faucet/faucet.go

@@ -516,12 +516,12 @@ func (f *faucet) apiHandler(w http.ResponseWriter, r *http.Request) {
 				}
 				continue
 			}
-			f.reqs = append(f.reqs, &request{
+			f.reqs = append([]*request{{
 				Avatar:  avatar,
 				Account: address,
 				Time:    time.Now(),
 				Tx:      signed,
-			})
+			}}, f.reqs...)
 			timeout := time.Duration(*minutesFlag*int(math.Pow(3, float64(msg.Tier)))) * time.Minute
 			grace := timeout / 288 // 24h timeout => 5m grace