Migrate Use template button to Pajamas

What does this MR do and why?

• Migrates the Use template button (previously a radio button) to a Pajamas button
• Updates the related JS
• This is part of the ongoing Pajamas design system migration and moves a legacy component to a Pajamas component

Related to ✂️ UX Paper Cuts 16.9 → Pajamas Migrations (#430246 - closed)

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