Update IncludeFragment to add data-nonce when a current nonce is present

[manuelpuyol]

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What are you trying to accomplish?

I'm providing a new Primer::CurrentAttributes class that callers can use to set some request/context dependent information to be passed to components. The first use here is setting a unique nonce to all IncludeFragment components without having to manually add it as a prop in every use-case.

Screenshots

No UI changes.

Integration

This is totally optional.

List the issues that this change affects.

Part of #4942

Risk Assessment

• Low risk the change is small, highly observable, and easily rolled back.

What approach did you choose and why?

I'm using ActiveSupport::CurrentAttributes to create a new Primer specific class to hold data related to components. This class is request bound so it ensures we can share data across a single request.

Accessibility

• Fixes axe scan violation - This change fixes an existing axe scan violation.
• 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: 7e5c261

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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[Copilot]

Pull Request Overview

This PR introduces a new Primer::CurrentAttributes class that allows setting request-specific context (nonce) for components and updates the IncludeFragment component to conditionally add a data-nonce attribute when a current nonce is present.

• Introduces Primer::CurrentAttributes to hold request-specific data.
• Updates IncludeFragment initialization to optionally include a "data-nonce" attribute.
• Adds tests to verify rendering behavior for nonce, loading, src, and accept attributes.

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
test/components/primer/alpha/include_fragment_test.rb	Adds tests to cover the new nonce behavior and loading.
app/lib/primer/current_attributes.rb	Implements CurrentAttributes to hold request-specific nonce.
app/components/primer/alpha/include_fragment.rb	Updates component initialization to use nonce and manage loading values.
.changeset/sour-beds-draw.md	Documents the changes and version bump for release.

Comments suppressed due to low confidence (1)

app/components/primer/alpha/include_fragment.rb:21

• [nitpick] Consider moving the assignment of @system_arguments[:loading] inside the 'if loading' block to avoid setting a nil value when loading is not provided, thereby improving clarity and reducing redundancy.

@system_arguments[:loading] = loading