feat(ecs): volume initialization rate

[badmintoncryer]

Issue # (if applicable)

None

Reason for this change

Amazon ECS now supports for configuring Amazon EBS Provisioned Rate for Volume Initialization.

https://aws.amazon.com/jp/about-aws/whats-new/2025/05/amazon-ecs-ebs-provisioned-rate-volume-initialization/

This feature cannot be configurable by AWS CDK.

Description of changes

• Add volumeInitializationRate to ServiceManagedEBSVolumeConfiguration

Describe any new or updated permissions being added

None

Description of how you validated changes

Add both unit and integ tests

Checklist

• My code adheres to the CONTRIBUTING GUIDE and DESIGN GUIDELINES

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By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license

[aws-cdk-automation]

AWS CodeBuild CI Report

• CodeBuild project: AutoBuildv2Project1C6BFA3F-wQm2hXv2jqQv
• Commit ID: 72b3dd6
• Result: SUCCEEDED
• Build Logs (available for 30 days)

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[kumsmrit]

Thank you for your contribution.

[mergify]

Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).

[mergify]

This pull request has been removed from the queue for the following reason: pull request branch update failed.

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You should update or rebase your pull request manually. If you do, this pull request will automatically be requeued once the queue conditions match again.
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[badmintoncryer]

@mergify update

[mergify]

update

❌ Mergify doesn't have permission to update

For security reasons, Mergify can't update this pull request. Try updating locally.
GitHub response: refusing to allow a GitHub App to create or update workflow .github/workflows/analytics-metadata-updater.yml without workflows permission

Pull request has been modified.

[badmintoncryer]

@kumsmrit Could you please approve this PR again? mergify failed to merge latest main branch.

[mergify]

Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).

[mergify]

Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).

[github-actions]

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