chore: Build Switch for Preview

[josh-bagwell]

Summary

Fixes: #3803, #3800 |

Updated visuals with "High Contrast Mode" enabled:

Release Category

Components

Release Note

We've created a new version of the Switch component in Preview.

It has increased accessibility with:

• Added an icon to show the unchecked and checked state.
• Has visible borders when "High Contrast Mode" is enabled.

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Where Should the Reviewer Start?

/modules/preview-react/switch/lib/Switch.tsx

[cypress]

Workday/canvas-kit    Run #10569

Run Properties:   Passed #10569  •  cfdd141829 ℹ️: Merge 1b243456f657d015af4efa12a0a99be65e29ffb8 into 81cc7c53405f3ec28f978ae194ea...

Project	Workday/canvas-kit
Branch Review	chore/build-preview-switch-26-03
Run status	Passed #10569
Run duration	02m 16s
Commit	cfdd141829 ℹ️: Merge 1b243456f657d015af4efa12a0a99be65e29ffb8 into 81cc7c53405f3ec28f978ae194ea...
Committer	Josh
View all properties for this run ↗︎

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Test results
Failures	0
Flaky	0
Pending	15
Skipped	0
Passing	798
View all changes introduced in this branch ↗︎

UI Coverage  19.57%
Untested elements	1510
Tested elements	365

Accessibility  99.36%
Failed rules	5 critical   5 serious   0 moderate   2 minor
Failed elements	67

[Copilot]

Pull request overview

Introduces a new Preview Switch component with updated visuals aimed at improving accessibility (checked/unchecked iconography + better visibility in Windows High Contrast / forced-colors scenarios), and wires it into Storybook + docs + tests.

Changes:

• Added @workday/canvas-kit-preview-react/switch implementation, exports, and Storybook docs/examples.
• Added Jest/RTL unit tests and Cypress a11y/component coverage for the Preview switch.
• Updated v15 upgrade guide content to call out the new Preview Switch.

Reviewed changes

Copilot reviewed 18 out of 18 changed files in this pull request and generated 13 comments.

Show a summary per file

File	Description
modules/preview-react/switch/lib/Switch.tsx	Adds the Preview Switch implementation (styling, icon states, forced-colors affordances).
modules/preview-react/switch/spec/Switch.spec.tsx	Adds React Testing Library unit tests for core behaviors.
cypress/component/SwitchPreview.spec.tsx	Adds Cypress component + axe checks for Preview switch stories.
modules/preview-react/switch/stories/Switch.stories.ts	New Storybook stories wiring examples into autodocs.
modules/preview-react/switch/stories/Switch.mdx	New Storybook MDX documentation page for the Preview switch.
modules/preview-react/switch/stories/examples/*.tsx	Adds usage examples (basic, disabled, error/caution, layout, ref forwarding).
modules/preview-react/switch/stories/visualTesting.stories.tsx	Adds Chromatic visual regression coverage matrix for states.
modules/preview-react/switch/index.ts	Exports the switch module entrypoint.
modules/preview-react/index.ts	Re-exports switch from the Preview package barrel.
modules/preview-react/switch/README.md	Adds README stub pointing to Storybook docs.
modules/preview-react/switch/spec/tsconfig.json	Adds spec tsconfig for the switch module.
modules/docs/mdx/15.0-UPGRADE-GUIDE.mdx	Documents the new Preview Switch in the v15 upgrade guide (MDX).
modules/docs/llm/upgrade-guides/15.0-UPGRADE-GUIDE.md	Mirrors the upgrade guide change in the LLM-facing markdown.

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[RayRedGoose]

it's related to Avatar, but with that change it's on the same level

[RayRedGoose]

same on line 32

[RayRedGoose]

Not related to this PR but we will need to alphabetically order that inner lists