[SetupFlow] On review page, immediately show tab with content

[florelis]

Summary of the pull request

On the review page we have multiple tabs showing what is to be done for the setup. We used to always show the first tab by default, even if it didn't have content. This PR changes it so that we show the first tab that has any content. This also hides the tab for Dev Drive if it wasn't selected.

References and relevant issues

Detailed description of the pull request / Additional comments

• Added a new property to the review tab view model that says whether it has any content
• Changed the selection of the tab to show to happen each time we get to the review page instead of only the first one, as the selections can change
• Used the new property from the tab view models to drive which tab to show
• Changed the review page to hide tabs that are null, the same way we hide pages that are null from the whole flow. This allows us to skip the dev drive tab if not needed.

Validation steps performed

PR checklist

• Closes #xxx
• Tests added/passed
• Documentation updated

[florelis]

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