fix(elasticloadbalancingv2): cannot create UDP listener for dual-stack NLB

[badmintoncryer]

Issue # (if applicable)

None

Reason for this change

NetworkListener has the validation that it does not create UDP listeners for dual-stack NLB.

However, dual-stack NLB now supports the creation of UDP listeners, and this validation is no longer required.

https://aws.amazon.com/about-aws/whats-new/2024/10/aws-udp-privatelink-dual-stack-network-load-balancers/?nc1=h_ls

Description of changes

Remove this validation from NetworkListener class.

    if (
      props.loadBalancer.ipAddressType === IpAddressType.DUAL_STACK &&
      (props.protocol === Protocol.UDP || props.protocol === Protocol.TCP_UDP)
    ) {
      throw new Error('UDP or TCP_UDP listeners cannot be added to a dualstack network load balancer.');
    }

Description of how you validated changes

Update unit test.

Checklist

• My code adheres to the CONTRIBUTING GUIDE and DESIGN GUIDELINES

---

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

[aws-cdk-automation]

The pull request linter has failed. See the aws-cdk-automation comment below for failure reasons. If you believe this pull request should receive an exemption, please comment and provide a justification.

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[badmintoncryer]

Exemption request
This change does not require a snapshot update.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.17%. Comparing base (d1b07d9) to head (2813bed).

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #32184   +/-   ##
=======================================
  Coverage   77.17%   77.17%           
=======================================
  Files         105      105           
  Lines        7169     7169           
  Branches     1315     1315           
=======================================
  Hits         5533     5533           
  Misses       1455     1455           
  Partials      181      181           

Flag	Coverage Δ
suite.unit	77.17% <ø> (ø)

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Components	Coverage Δ
packages/aws-cdk	77.17% <ø> (ø)

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[aws-cdk-automation]

AWS CodeBuild CI Report

• CodeBuild project: AutoBuildv2Project1C6BFA3F-wQm2hXv2jqQv
• Commit ID: 2813bed
• Result: SUCCEEDED
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[GavinZZ]

Thank you for making the change! Can you add an integration test to test the deployability with UDP as protocol?

[aws-cdk-automation]

The pull request linter fails with the following errors:

❌ Fixes must contain a change to an integration test file and the resulting snapshot.

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