chore: fixes ts error in stepindicator test

[langz]

Fixes the following ts error:

    Warning: Failed prop type: The prop `sidebar_id` is marked as required in `StepIndicatorProvider`, but its value is `undefined`.
        at StepIndicatorProvider (/Users/anderslangseth/dev/eufemia/packages/dnb-eufemia/src/components/step-indicator/StepIndicatorContext.js:103:5)
        at StepIndicatorSidebar (/Users/anderslangseth/dev/eufemia/packages/dnb-eufemia/src/components/step-indicator/StepIndicatorSidebar.js:19:71)
        at children (/Users/anderslangseth/dev/eufemia/packages/dnb-eufemia/src/shared/Provider.tsx:26:11)

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Name	Status	Preview	Updated (UTC)
eufemia	🔄 Building (Inspect)		Jun 15, 2023 8:21am

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🎉 This PR is included in version 10.1.0 🎉

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