fix(blockchain): fix deposit stuck in CONFIRMING status

The updateConfirmations logic only checked for DETECTED status
when confirming, so deposits that transitioned to CONFIRMING
would never be confirmed even with enough confirmations.

Changed condition to accept both DETECTED and CONFIRMING status.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/services/blockchain-service/src/domain/aggregates/deposit-transaction/deposit-transaction.aggregate.ts

@@ -161,12 +161,14 @@ export class DepositTransaction extends AggregateRoot<bigint> {
     const confirmations = Number(currentBlockNumber.diff(this.props.blockNumber));
     this.props.confirmations = Math.max(0, confirmations);
 
+    // 检查是否达到确认要求（状态为 DETECTED 或 CONFIRMING 都可以确认）
     if (
       this.props.confirmations >= requiredConfirmations &&
-      this.props.status === DepositStatus.DETECTED
+      (this.props.status === DepositStatus.DETECTED || this.props.status === DepositStatus.CONFIRMING)
     ) {
       this.confirm();
     } else if (this.props.status === DepositStatus.DETECTED) {
+      // 首次检测但确认数不够，标记为确认中
       this.props.status = DepositStatus.CONFIRMING;
     }
   }