feat(ecs-patterns): dualstack NLB

[badmintoncryer]

Issue # (if applicable)

Closes #29614.

Reason for this change

Dualstack NLB is not supported in NetworkLoadBalancedServiceBase.

Description of changes

• Add ipAddressType to NetworkLoadBalancedServiceBaseProps.
  • default value is IpAddressType.Ipv4

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

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[GavinZZ]

@badmintoncryer Thanks for the PR, just FYI that there're conflicts to resolve.

[badmintoncryer]

@GavinZZ Thanks for the review. I've resolved all conflicts.

[GavinZZ]

LGTM, thanks for contributing!

[mergify]

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AWS CodeBuild CI Report

• CodeBuild project: AutoBuildv2Project1C6BFA3F-wQm2hXv2jqQv
• Commit ID: e56dd40
• Result: SUCCEEDED
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