fix(select-input): safely access value for key

[BRKalow]

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Description

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[changeset-bot]

🦋 Changeset detected

Latest commit: 6937d55

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@hashicorp/react-select-input	Patch

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[github-actions]

📦 Canary Packages Published

Latest commit: 6937d55

Published 3 packages

@hashicorp/react-docs-page@14.4.5-canary-202191918515

npm install @hashicorp/react-docs-page@canary

@hashicorp/react-open-api-page@2.0.1-canary-202191918515

npm install @hashicorp/react-open-api-page@canary

@hashicorp/react-select-input@4.0.5-canary-202191918515

npm install @hashicorp/react-select-input@canary

[alexcarpenter]

Fixed the issue we were seeing in www builds 👍🏼