Add check for empty API key before adding Authorization header

[svavassori]

Pull Request

Related issue

Fixes #834

What does this PR do?

• It adds empty string check before adding the Authorization header, so to make it consistent with the default apiKey value set by the host-only Config constructor

PR checklist

Please check if your PR fulfills the following requirements:

• Does this PR fix an existing issue, or have you listed the changes applied in the PR description (and why they are needed)?
• Have you read the contributing guidelines?
• Have you made sure that the title is accurate and descriptive of the changes?

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[Copilot]

Copilot reviewed 1 out of 1 changed files in this pull request and generated no comments.

[svavassori]

@curquiza any news or doubts about this PR?

[curquiza]

bors merge

[meili-bors]

Build succeeded:

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