ActionMenu form input

[camertron]

What are you trying to accomplish?

This PR allows an ActionMenu to be used as an form input when writing forms using the Primer Forms framework. Example:

class ActionMenuForm < ApplicationForm
  form do |action_menu_form|
    action_menu_form.action_menu(name: "city", label: "Favorite city", caption: "Select") do |city_list|
      city_list.with_item(label: "Lopez Island", data: { value: "lopez_island" }) do |item|
        item.with_leading_visual_icon(icon: :log)
      end
      city_list.with_item(label: "Bellevue", data: { value: "bellevue" }) do |item|
        item.with_leading_visual_icon(icon: :paste)
      end
      city_list.with_item(label: "Seattle", data: { value: "seattle" }) do |item|
        item.with_leading_visual_icon(icon: :"device-camera")
      end
    end

    action_menu_form.submit(name: :submit, label: "Submit")
  end
end

Integration

No changes necessary in production.

Risk Assessment

• Low risk the change is small, highly observable, and easily rolled back.
• Medium risk changes that are isolated, reduced in scope or could impact few users. The change will not impact library availability.
• High risk changes are those that could impact customers and SLOs, low or no test coverage, low observability, or slow to rollback.

Accessibility

• No new axe scan violation - This change does not introduce any new axe scan violations.

Merge checklist

• Added/updated tests
• Added/updated documentation
• Added/updated previews (Lookbook)
• Tested in Chrome
• Tested in Firefox
• Tested in Safari
• Tested in Edge

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[changeset-bot]

🦋 Changeset detected

Latest commit: 1a7c825

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

This PR includes changesets to release 1 package

Name	Type
@primer/view-components	Minor

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