feat(components/forms): add checkbox labelText input

[Blackbaud-ErikaMcVey]

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[nx-cloud]

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✅ Successfully ran 28 targets

• nx affected --target=test,posttest --parallel=5 --configuration=ci
• nx run i18n:postbuild
• nx build i18n
• nx affected:lint --quiet --silent --parallel=5
• nx affected --target=build --parallel=10
• nx build e2e-schematics
• nx run split-view-storybook:build-storybook:ci
• nx run ag-grid-storybook:build-storybook:ci
• nx run phone-field-storybook:build-storybook:ci
• nx run lookup-storybook:build-storybook:ci
• nx run action-bars-storybook:build-storybook:ci
• nx run text-editor-storybook:build-storybook:ci
• nx run theme-storybook:build-storybook:ci
• nx run errors-storybook:build-storybook:ci
• nx run tabs-storybook:build-storybook:ci
• nx run forms-storybook:build-storybook:ci
• nx run pages-storybook:build-storybook:ci
• nx build code-examples --baseHref=https://blackbaud.github.io/skyux-pr-preview/1965/code-examples/
• nx run lists-storybook:build-storybook:ci
• nx run inline-form-storybook:build-storybook:ci
• nx run data-manager-storybook:build-storybook:ci
• nx run angular-tree-component-storybook:build-storybook:ci
• nx run layout-storybook:build-storybook:ci
• nx build integration --baseHref=https://blackbaud.github.io/skyux-pr-preview/1965/integration/
• nx build playground --baseHref=https://blackbaud.github.io/skyux-pr-preview/1965/playground/
• nx run datetime-storybook:build-storybook:ci
• nx run colorpicker-storybook:build-storybook:ci
• nx run avatar-storybook:build-storybook:ci

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[blackbaud-sky-build-user]

Storybook preview

Component Storybooks:

• action-bars-storybook
• ag-grid-storybook
• angular-tree-component-storybook
• avatar-storybook
• colorpicker-storybook
• data-manager-storybook
• datetime-storybook
• errors-storybook
• forms-storybook
• inline-form-storybook
• layout-storybook
• lists-storybook
• lookup-storybook
• pages-storybook
• phone-field-storybook
• split-view-storybook
• tabs-storybook
• text-editor-storybook
• theme-storybook

Apps:

• code-examples
• dep-graph
• integration
• playground

[blackbaud-sky-build-user]

Cherry-pick successful! 🍒 🎉 See #1966