eth/protocols/snap: fix negative eta in state progress logging (#32225)

Author: DanialZhouMAX

eth/protocols/snap/sync.go

@@ -3111,6 +3111,10 @@ func (s *Syncer) reportSyncProgress(force bool) {
 	if estBytes < 1.0 {
 		return
 	}
+	// Cap the estimated state size using the synced size to avoid negative values
+	if estBytes < float64(synced) {
+		estBytes = float64(synced)
+	}
 	elapsed := time.Since(s.startTime)
 	estTime := elapsed / time.Duration(synced) * time.Duration(estBytes)