test(lastleg): separate stable carton marks from return numbers

lastleg-service/src/test/java/com/baiyue/lastleg/service/ReturnBusinessNumberTest.java

@@ -9,8 +9,9 @@ import java.util.stream.IntStream;
 import static org.junit.jupiter.api.Assertions.*;
 
 class ReturnBusinessNumberTest {
+    // 实物箱唛采用稳定BX编码，由CompactBusinessNumberServiceTest校验；此处仅验证独立业务编号。
     private static final Map<String, String> TYPES = Map.of("RETURN", "RT", "RETURN_RECEIPT", "RR",
-        "RETURN_BATCH", "RB", "RETURN_CARTON", "RC", "RETURN_RELABEL", "RETU");
+        "RETURN_BATCH", "RB", "RETURN_RELABEL", "RETU");
 
     @Test
     void formerlyCollidingInternalIdsAndRepeatedIdsNoLongerDetermineBusinessNumbers() {