feat(events-targets): support ApiGatewayV2 HttpApi

[phuhung273]

Issue # (if applicable)

Closes #26649

Description of changes

Same logic as ApiGateway v1 target with some differences:

Feature	v1	v2
_api interface	api.IRestApi	apigwv2.IHttpApi
default stage if not specified	_restApi.deploymentStage.stageName	_httpApi.defaultStage.stageName

Description of how you validated changes

Unit + Integ

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

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.43%. Comparing base (2cff67e) to head (4ff17eb).

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #33864   +/-   ##
=======================================
  Coverage   82.43%   82.43%           
=======================================
  Files         120      120           
  Lines        6975     6975           
  Branches     1178     1178           
=======================================
  Hits         5750     5750           
  Misses       1120     1120           
  Partials      105      105           

Flag	Coverage Δ
suite.unit	82.43% <ø> (ø)

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Components	Coverage Δ
packages/aws-cdk	∅ <ø> (∅)
packages/aws-cdk-lib/core	82.43% <ø> (ø)

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[paulhcsun]

Thanks for the contribution! Just a few comments for some minor changes.

Pull request has been modified.

[paulhcsun]

@Mergifyio update

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update

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[aws-cdk-automation]

AWS CodeBuild CI Report

• CodeBuild project: AutoBuildv2Project1C6BFA3F-wQm2hXv2jqQv
• Commit ID: 4ff17eb
• Result: SUCCEEDED
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