feat: add whiteSpace prop to Text component to control CSS white-space property

[mustafajw07]

Closes #7607

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Here's a summary of everything added in this PR:

Changes

Text.tsx — Core implementation

• Added whiteSpace?: 'pre' | 'normal' | 'nowrap' | 'pre-wrap' | 'pre-line' to TextProps
• Destructured whiteSpace from props and passed it as a data-white-space attribute (consistent with the data-size / data-weight pattern)

Text.module.css — Styling

• Added 5 CSS rules scoped via :where([data-white-space='...']) selectors, one for each supported value

Text.test.tsx — Tests

• Added test asserting data-white-space attribute is set for each valid value
• Added test asserting the attribute is absent when the prop is omitted

Text.stories.tsx — Playground story (by you)

• Added whiteSpace: 'normal' to default args
• Added a whiteSpace radio control with all 5 options

Text.features.stories.tsx — Feature stories (by you)

• Added 5 individual stories: PreWhiteSpace, NormalWhiteSpace, NowrapWhiteSpace, PreWrapWhiteSpace, PreLineWhiteSpace

styled-react/Text.tsx — Styled wrapper (by you)

• Added whiteSpace to BaseTextProps to keep the styled variant in sync

Removed

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Rollout strategy

• Patch release
• Minor release
• Major release; if selected, include a written rollout or migration plan
• None; if selected, include a brief description as to why

Testing & Reviewing

Merge checklist

• Added/updated tests
• Added/updated documentation
• Added/updated previews (Storybook)
• Changes are SSR compatible
• Tested in Chrome
• Tested in Firefox
• Tested in Safari
• Tested in Edge
• (GitHub staff only) Integration tests pass at github/github-ui (Learn more about how to run integration tests)

[changeset-bot]

🦋 Changeset detected

Latest commit: 2c980c2

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 2 packages

Name	Type
@primer/react	Minor
@primer/styled-react	Minor

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