[Tests] Add unit tests for showMultipleCLIWarningIfNeeded

[gonzaloriestra]

WHY are these changes introduced?

This PR introduces comprehensive unit testing for showMultipleCLIWarningIfNeeded in @shopify/cli-kit package to improve coverage and safeguard against regressions, adhering to .agents/automated-tasks/tests.md.

WHAT is this pull request doing?

We added tests covering:

• Early-exit when @shopify/cli dependency is missing from the passed dependencies.
• Early-exit when JSON output is enabled.
• Early-exit when global CLI version cannot be fetched.
• Early-exit when local CLI version cannot be fetched in global process.
• Renders info warning with local dependency message when process is not global.
• Renders info warning with global installation message when process is global.
• Uses rate-limiting check runAtMinimumInterval correctly.

How to test your changes?

CI

Checklist

• I've considered possible cross-platform impacts (Mac, Linux, Windows)
• I've considered possible documentation changes
• I've considered analytics changes to measure impact
• The change is user-facing — I've identified the correct bump type (patch for bug fixes · minor for new features · major for breaking changes) and added a changeset with pnpm changeset add

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PR created automatically by Jules for task 17820496270967834501 started by @gonzaloriestra

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[gonzaloriestra]

Merge activity

• Jul 17, 10:13 AM UTC: A user started a stack merge that includes this pull request via Graphite.
• Jul 17, 10:13 AM UTC: @gonzaloriestra added this pull request to the GitHub merge queue with Graphite.