Update the button variant in the pipeline empty state

Summary

There are too many primary buttons on a single page, which increases visual complexity and reduces readability.

Definition of Done

• The buttons in the template list are updated with the new variants: category="primary" variant="default"

Details

Current page	Proposal

Design spec

• Figma dev 🔗
• Design tab 👉

Roles involved

• Design
• Technical Writing
• Backend
• Frontend
• Test engineering

NOTE: When work is ready to be defined, please create appropriate sub-tasks.