aws-ecs: Cluster.fromClusterAttributes does not properly set autoScalingGroup

[cheruvian]

Describe the bug

Cluster.fromClusterAttributes does not properly set autoScalingGroup

Expected Behavior

autoScalingGroup to be set

Current Behavior

Is undefined which leads to NPEs.

Reproduction Steps

    const vpc   = new Vpc(this, 'Vpc', {});
    const cluster = Cluster.fromClusterAttributes(this, 'Cluster', {
      clusterName: 'my-cluster',
      vpc,
      securityGroups: [],
      autoscalingGroup: new AutoScalingGroup(this, 'Asg', {
        vpc,
        instanceType: InstanceType.of(InstanceClass.A1, InstanceSize.MICRO),
        machineImage: MachineImage.latestAmazonLinux2(),
      }),
    });
    cluster.autoscalingGroup!.addUserData('yum install -y aws-cli');

Possible Solution

All ClusterAttributes should get set on the ImportCluster.

Additional Information/Context

No response

CDK CLI Version

2.126.0

Framework Version

No response

Node.js Version

v20.10.0

OS

OSX

Language

TypeScript

Language Version

No response

Other information

No response

[cheruvian]

Workaround for anyone interested:

    (this.cluster as any).autoscalingGroup = this.autoScalingGroup;

[tim-finnigan]

Thanks for reporting this issue and noting the workaround! Looks like the PR linked above (#29244) was created to address this issue.

[github-actions]

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