feat: enhance context cancellation handling

internal/pkg/core/deployer/providers/aliyun-cas-deploy/aliyun_cas_deploy.go

@@ -126,8 +126,10 @@ func (d *DeployerProvider) Deploy(ctx context.Context, certPEM string, privkeyPE
 	// 循环获取部署任务详情，等待任务状态变更
 	// REF: https://help.aliyun.com/zh/ssl-certificate/developer-reference/api-cas-2020-04-07-describedeploymentjob
 	for {
-		if ctx.Err() != nil {
+		select {
+		case <-ctx.Done():
 			return nil, ctx.Err()
+		default:
 		}
 
 		describeDeploymentJobReq := &alicas.DescribeDeploymentJobRequest{