Library theming: Update Clipboard copy component in design kit

[andrew-ronaldson]

Update the Clipboard copy component files in the PatternFly design kit for the unified theme initiative. Update related Figma files, styles, and tokens so they comply with the latest PatternFly unified theme standards.

Deliverables:

• Update tokens
• Include new variants
• Update branded icons

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Jira Issue: PF-3674