Icon viewBox validation: keep checks as warnings, not build failures

[Copilot]

Review feedback on #565 requested that viewBox mismatch checks not fail the build — warnings are the appropriate level for these checks.

Outcome

No code changes were required. The existing implementation in generate-images.ts already uses console.warn only, with no process.exit(1) or error-throwing logic:

if (nameObj.rawSize && width !== nameObj.rawSize && !isColoredIcon && !isLogoIcon && !isPSAIcon) {
    console.warn(
        `⚠️  ViewBox mismatch in ${filename}: ` +
            `expected ${nameObj.rawSize}x${nameObj.rawSize}, got ${width}x${height}`,
    );
}

The build continues uninterrupted on mismatch — the check surfaces as a console warning only.

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[changeset-bot]

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