feat(elbv2): throw ValidationError intsead of untyped errors

[kaizencc]

Issue

aws-elasticloadbalancing* for #32569

Description of changes

ValidationErrors everywhere

Describe any new or updated permissions being added

n/a

Description of how you validated changes

Existing tests. Exemptions granted as this is basically a refactor of existing code.

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]

(This review is outdated)

✅ Updated pull request passes all PRLinter validations. Dismissing previous PRLinter review.

[aws-cdk-automation]

(This review is outdated)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.57%. Comparing base (b1dfdd2) to head (1275602).

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #33111   +/-   ##
=======================================
  Coverage   81.57%   81.57%           
=======================================
  Files         227      227           
  Lines       13793    13793           
  Branches     2419     2419           
=======================================
  Hits        11251    11251           
  Misses       2270     2270           
  Partials      272      272           

Flag	Coverage Δ
suite.unit	81.57% <ø> (ø)

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Components	Coverage Δ
packages/aws-cdk	80.99% <ø> (ø)
packages/aws-cdk-lib/core	82.17% <ø> (ø)

✅ Updated pull request passes all PRLinter validations. Dismissing previous PRLinter review.

[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).

[aws-cdk-automation]

AWS CodeBuild CI Report

• CodeBuild project: AutoBuildv2Project1C6BFA3F-wQm2hXv2jqQv
• Commit ID: 1275602
• Result: SUCCEEDED
• Build Logs (available for 30 days)

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[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).

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