Fix: back navigation for governance app screens

[schmanu]

What this PR changes

• Navigation on close in StepHeader of governance part of app leads to governance page
• Navigation after finishing the educational series leads back to governance app

[github-actions]

Branch preview

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https://fix_back_navigation--governance.review-react-br.5afe.dev

[github-actions]

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Type	Occurrences	Fixable
Errors	0	0
Warnings	0	0
Ignored	0	N/A

• Result: ✅ success
• Annotations: 0 total

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