refactor: remove more duplicate enum values

[mergify]

This is an automatic backport of pull request #20982 done by Mergify.
Cherry-pick of 7f4f150 has failed:

On branch mergify/bp/v1-main/pr-20982
Your branch is up to date with 'origin/v1-main'.

You are currently cherry-picking commit 7f4f150b97.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   packages/@aws-cdk/aws-secretsmanager/test/secret.test.ts
	modified:   packages/@aws-cdk/core/lib/custom-resource-provider/custom-resource-provider.ts

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   packages/@aws-cdk/aws-secretsmanager/lib/secret.ts

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/github/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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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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AWS CodeBuild CI Report

• CodeBuild project: AutoBuildProject89A8053A-LhjRyN9kxr8o
• Commit ID: 4a83d97
• 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).