chore(atomic): migrate atomic-insight-edit-toggle to Lit

[Copilot]

✅ Checklist

• 🧪 The component is unit tested
• 🧪 The component includes E2E tests
• 🗑️ Old Cypress tests exclusive to the component are removed
• 📖 The component is documented in storybook with an .mdx file
• ♿ The component complies with the Web Content Accessibility Guidelines.
• 🌐 All strings intended for humans or assistive technology must be localized with i18n.
• 📦 The Lit component is exported in the appropriate index.ts and lazy-index.ts files.
• 🎨 CSS parts are documented still accessible.
• 🦥 Slotted Content, public methods and properties are documented
• 🔄 The component outputs the same Angular output as before with Stencil
• 🏷️ The component declares the component type in the HTMLElementTagNameMap

https://coveord.atlassian.net/browse/KIT-4873

[Copilot]

Pull request overview

This PR migrates the atomic-insight-edit-toggle component from Stencil to Lit as part of the ongoing framework migration effort. The component provides an edit button for insight interfaces and is marked as internal.

Key Changes

• Converted component from Stencil's JSX syntax to Lit's template system
• Replaced Stencil decorators with Lit decorators (@customElement, @property)
• Added comprehensive test coverage (unit tests and E2E tests)
• Added Storybook documentation (stories and MDX file)

Reviewed changes

Copilot reviewed 16 out of 18 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
packages/atomic/src/components/insight/atomic-insight-edit-toggle/atomic-insight-edit-toggle.ts	New Lit component implementation replacing Stencil .tsx file
packages/atomic/src/components/insight/atomic-insight-edit-toggle/atomic-insight-edit-toggle.spec.ts	New unit tests for the component
packages/atomic/src/components/insight/atomic-insight-edit-toggle/e2e/atomic-insight-edit-toggle.e2e.ts	New E2E tests
packages/atomic/src/components/insight/atomic-insight-edit-toggle/e2e/fixture.ts	E2E test fixture setup
packages/atomic/src/components/insight/atomic-insight-edit-toggle/e2e/page-object.ts	Page object pattern for E2E tests
packages/atomic/src/components/insight/atomic-insight-edit-toggle/atomic-insight-edit-toggle.new.stories.tsx	Storybook stories demonstrating component usage
packages/atomic/src/components/insight/atomic-insight-edit-toggle/atomic-insight-edit-toggle.mdx	Storybook documentation
packages/atomic/src/components/insight/index.ts	Added export for Lit component
packages/atomic/src/components/insight/lazy-index.ts	Added lazy loading configuration
packages/atomic-react/src/components/search/components.ts	Added React wrapper
packages/atomic-react/src/components/commerce/components.ts	Added React wrapper
packages/atomic/src/components.d.ts	Removed Stencil-generated type definitions
packages/atomic/src/utils/custom-element-tags.ts	Registered component tag
packages/atomic/src/images/edit.svg	Minified SVG (single line for better Storybook import)
packages/atomic/.storybook/main.ts	Updated SVG transform to strip newlines
.github/prompts/migrate-stencil-to-lit.prompt.md	Updated migration guide with SVG import exception

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