fix: mark the imageName parameter in the loadImageFromURL type definition as required (fix: #842)

[marlo22]

Please check if the PR fulfills these requirements

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• Tests for the changes have been added (for bug fixes/features)
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• It does not introduce a breaking change or has description for the breaking change

[stale]

This issue has been automatically marked as inactive because there hasn’t been much going on it lately. It is going to be closed after 7 days. Thanks!