fix: improve timestamp validation logic in CheckJWS function

cli/pkg/web5/jws/checkjws.go

@@ -192,7 +192,8 @@ func CheckJWS(jws string, duration int64) (*CheckJWSResult, error) {
 
 	// Check timestamp
 	now := time.Now().UnixMilli()
-	if now-timestamp > duration {
+	diff := now - timestamp
+	if max(diff, -diff) > duration {
 		return nil, fmt.Errorf("timestamp is out of range")
 	}