On SDK 13.1 the 'sidebar' identifier on the root VStack propagates to
every child, erasing openSettingsBtn/openAboutBtn/btnToggleAllHelp
(a11y dump, run 32201). Revert it; the test now compares presetSelect
frame before/after toggling help overlays.
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Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>