Revert "Chore: remove styled system components"

[francinelucca]

Reverts #6941

Reverting due to CI failures

[changeset-bot]

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Latest commit: bf31fa0

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[Copilot]

Pull Request Overview

This PR reverts the removal of styled-components from various components in the Primer React library, restoring them to their styled-components implementation due to CI failures. The revert affects multiple components including UnderlineNav, Tooltip, LabelGroup, ValidationAnimationContainer, and related utilities.

Key Changes:

• Restores styled-components usage across multiple deprecated and internal components
• Reverts CSS module migration back to styled-components for affected components
• Re-adds styled-system type support and responsive value handling

Reviewed Changes

Copilot reviewed 24 out of 24 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
packages/react/src/internal/utils/sharedCheckboxAndRadioStyles.ts	Re-adds shared styled-components styles for checkbox and radio inputs
packages/react/src/internal/components/ValidationAnimationContainer.tsx	Reverts from CSS modules back to styled-components for animation implementation
packages/react/src/internal/components/ValidationAnimationContainer.module.css	Removes CSS module file that was replaced by styled-components
packages/react/src/internal/components/TextInputWrapper.tsx	Re-adds ResponsiveValue type support and conditional style handling
packages/react/src/experimental/UnderlinePanels/UnderlinePanels.tsx	Re-adds SxProp support to component interfaces
packages/react/src/deprecated/UnderlineNav/UnderlineNav.tsx	Reverts from CSS modules to styled-components implementation
packages/react/src/deprecated/UnderlineNav/UnderlineNav.module.css	Removes CSS module file replaced by styled-components
packages/react/src/deprecated/ActionList/Item.tsx	Restores theme function usage for CSS variable assignment
packages/react/src/UnderlineNav/UnderlineNav.tsx	Re-adds styled-components for MoreMenuListItem component
packages/react/src/Truncate/Truncate.tsx	Re-adds MaxWidthProps support from styled-system
packages/react/src/Tooltip/Tooltip.tsx	Reverts from CSS modules to comprehensive styled-components implementation
packages/react/src/Tooltip/Tooltip.module.css	Removes CSS module file replaced by styled-components
packages/react/src/TextInput/TextInput.tsx	Minor prop reordering change
packages/react/src/TextInput/TextInput.docs.json	Updates prop type documentation to include responsive arrays
packages/react/src/Text/Text.tsx	Re-adds styled-system type support and StyledComponent typing
packages/react/src/SkeletonAvatar/SkeletonAvatar.tsx	Adds merge utility usage for style object combination
packages/react/src/Skeleton/SkeletonBox.tsx	Adds merge utility usage for style object combination
packages/react/src/SegmentedControl/SegmentedControl.features.stories.tsx	Updates stories to use component props instead of inline styles
packages/react/src/PageLayout/PageLayout.examples.stories.tsx	Adds large commented code block for potential future feature
packages/react/src/LabelGroup/LabelGroup.tsx	Reverts from CSS modules to styled-components implementation
packages/react/src/LabelGroup/LabelGroup.module.css	Removes most CSS module styles replaced by styled-components
packages/react/src/FormControl/FormControlLeadingVisual.tsx	Replaces CSS custom properties with theme function calls
packages/react/src/DialogV1/Dialog.test.tsx	Updates test component to use fontFamily prop instead of inline styles
.changeset/chilled-spoons-roll.md	Removes changeset file for the reverted styled-components removal

[github-actions]

👋 Hi, this pull request contains changes to the source code that github/github depends on. If you are GitHub staff, we recommend testing these changes with github/github using the integration workflow. Thanks!