fix: align catalog filter checkbox labels

[miacycle]

Summary

• move Stack layout props in CatalogFilterSection from raw props to sx so they render as CSS instead of leaking into the DOM
• restore vertical centering between filter checkboxes and labels across consumers of CatalogFilterSidebar
• add a regression test that fails if raw layout attributes like alignitems, justifycontent, gap, or px reappear on the rendered DOM

Test plan

• npx eslint src/custom/CatalogFilterSection/FilterSection.tsx src/__testing__/CatalogFilterSection.test.tsx
• npx jest src/__testing__/CatalogFilterSection.test.tsx --runInBand
• npm test
• npm run build

[gemini-code-assist]

Code Review

This pull request migrates styling properties on Stack components in FilterSection.tsx to the sx prop to prevent attribute leakage to the DOM, supported by a new regression test. Feedback suggests optimizing performance by extracting static sx objects into constants outside the component to prevent re-allocations during renders, and improving test robustness by verifying that styles are correctly applied while extending coverage to all modified elements.

[Copilot]

Pull request overview

This PR fixes layout prop leakage from CatalogFilterSection option rows into the rendered DOM (which can break alignment/styling across consumers) by moving layout-related props onto sx, and adds a regression test to detect reintroducing those raw attributes.

Changes:

• Migrate Stack layout props (alignItems, justifyContent, gap, px) to sx in FilterSection option rows.
• Restore consistent vertical centering between filter checkboxes and labels.
• Add a Jest regression test to prevent layout prop attributes from appearing on rendered DOM nodes.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
src/custom/CatalogFilterSection/FilterSection.tsx	Moves layout props into sx on option row Stacks to avoid leaking invalid DOM attributes and preserve alignment.
src/testing/CatalogFilterSection.test.tsx	Adds a regression test intended to catch leaked layout attributes in rendered output.