Prevent accidental navigation when changing PFs

[kschiffer]

Summary

This quickfix PR will prevent users from accidentally navigating away when changing payload formatters in the Console.

Changes

• Refactor <Prompt />-component a bit
• Add <Prompt /> to payload formatter form
• Fix missing proptype in form component

Testing

Manual testing.

Notes for Reviewers

Was notified of this problem by @ysmilda

Checklist

• [x] Scope: The referenced issue is addressed, there are no unrelated changes.
• [x] Compatibility: The changes are backwards compatible with existing API, storage, configuration and CLI, according to the compatibility commitments in README.md for the chosen target branch.
• [x] Documentation: Relevant documentation is added or updated.
• [x] Changelog: Significant features, behavior changes, deprecations and fixes are added to CHANGELOG.md.
• [x] Commits: Commit messages follow guidelines in CONTRIBUTING.md, there are no fixup commits left.