Editor V2: Swap View YAML and Edit component button priorities

[shopify-river]

Summary

In the task/component actions, promote View YAML to a primary button and move Edit component into the actions menu.

Rationale

From the Apr 21 CSOM sync: View YAML is expected to be used more frequently than Edit component. The current arrangement (Edit primary, View YAML secondary) is backwards relative to actual usage.

Acceptance

• "View YAML" is a primary action button on task/component nodes in editor V2.
• "Edit component" is demoted into the actions ("Thunderbolt") menu.
• Pair with Morgan's instrumentation so we can validate the usage hypothesis post-ship.

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Context: Captured from the Tangle / CSOM UX sync on Apr 21, 2026 (notes). Attendees: Matt Beaulne, Camiel van Schoonhoven, Maksym Yezhov.

Requested by Matt Beaulne matt.beaulne@shopify.com.