fix(ops): 修复取消 QUEUED 工单时队列状态转换校验不允许 WAITING→REMOVED 的问题

队列状态流转校验缺少 WAITING→REMOVED 的转换规则，导致取消 QUEUED 工单时
队列条目未被正确清理，autoDispatchNext 查到残留的 WAITING 记录后尝试派发
已取消的工单（CANCELLED→DISPATCHED），触发 IllegalStateException 并污染
外层事务，最终抛出 UnexpectedRollbackException。

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

viewsh-module-ops/viewsh-module-ops-biz/src/main/java/com/viewsh/module/ops/service/queue/OrderQueueServiceEnhanced.java

@@ -673,7 +673,7 @@ public class OrderQueueServiceEnhanced implements OrderQueueService {
         return switch (oldStatus.toUpperCase()) {
             case "PENDING" -> "WAITING".equals(newStatus) || "CANCELLED".equals(newStatus);
             case "WAITING" -> "PROCESSING".equals(newStatus) || "DISPATCHED".equals(newStatus)
-                    || "CANCELLED".equals(newStatus);
+                    || "CANCELLED".equals(newStatus) || "REMOVED".equals(newStatus);
             case "PROCESSING", "DISPATCHED" -> "PAUSED".equals(newStatus)
                     || "REMOVED".equals(newStatus) || "COMPLETED".equals(newStatus);
             case "PAUSED" -> "PROCESSING".equals(newStatus) || "DISPATCHED".equals(newStatus);