fix(cloudfront): add validations on ResponseHeadersCorsBehavior.accessControlAllowMethods

[Tietew]

Issue # (if applicable)

N/A

Reason for this change

There is no description about the allowed values on ResponseHeadersPolicy's corsBehavior.accessControlAllowMethods.
The wildcard (any methods allowed) is ALL instead of * (wildcard for headers).

This PR adds the description and validations on it.

Description of changes

Added the description of the allowed values on ResponseHeadersCorsBehavior.accessControlAllowMethods.
Added validations:

• exactly ['ALL'] which means any http methods are allowed
• whether includes only allowed method names

Describe any new or updated permissions being added

Nothing

Description of how you validated changes

Added unit tests

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]

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[Tietew]

Exemption Request

Only validations are added and these are not covered by integration tests.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.46%. Comparing base (035d17d) to head (f6e8be8).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #32769   +/-   ##
=======================================
  Coverage   81.46%   81.46%           
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  Files         224      224           
  Lines       13748    13748           
  Branches     2412     2412           
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  Hits        11200    11200           
  Misses       2273     2273           
  Partials      275      275           

Flag	Coverage Δ
suite.unit	81.46% <ø> (ø)

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Components	Coverage Δ
packages/aws-cdk	80.85% <ø> (ø)
packages/aws-cdk-lib/core	82.10% <ø> (ø)

[aws-cdk-automation]

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

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

Pull request has been modified.

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Pull request has been modified.

[aws-cdk-automation]

AWS CodeBuild CI Report

• CodeBuild project: AutoBuildv2Project1C6BFA3F-wQm2hXv2jqQv
• Commit ID: f6e8be8
• Result: SUCCEEDED
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[mergify]

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