Add flag octicon

[ericwbailey]

This PR adds flag-16 and flag-24 icons to Octicons, following this request.

The current working draft is contained in this Figma branch, which will be merged when this PR is merged.

[changeset-bot]

🦋 Changeset detected

Latest commit: 2431e02

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

This PR includes changesets to release 1 package

Name	Type
@primer/octicons	Minor

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[Copilot]

Pull request overview

This PR adds a new flag Octicon (16px and 24px variants) and registers its search keywords, addressing the request in primer/issues/6624.

Changes:

• Add new SVG assets: icons/flag-16.svg and icons/flag-24.svg
• Add flag entry to keywords.json
• Add a changeset to release the new icon in the next minor version

Show a summary per file

File	Description
keywords.json	Adds keyword aliases for the new flag icon name.
icons/flag-16.svg	Introduces the 16px flag SVG asset.
icons/flag-24.svg	Introduces the 24px flag SVG asset.
.changeset/spotty-bats-call.md	Declares a minor release for the new icon addition.

Copilot's findings

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• Files reviewed: 2/4 changed files
• Comments generated: 0

[dylanatsmith]

Hey Eric. I have some concerns about the design here for consistency with the icon set.

This doesn’t appear to follow the design guidelines for stroke width, etc. and I think we should use an outlined flag to match icons such as comment, law, pin, etc.

[ericwbailey]

@dylanatsmith I can revisit, no problem. Will tag you when the design is updated and pushed up.

[llastflowers]

pls re-request review when @dylanatsmith requested changes are done! Just doing this so I'll get a new review notification at that time 👍