workflows/tests.yml: skip coverage upload when brew tests is skipped

[p-linnane]

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After merging #22451, the tests (online) job started failing on push-to-main events. Run brew tests has an existing guard that skips tests for the online matrix on push events. No coverage files are generated in that case, but all three upload steps still ran unconditionally. The two Codecov steps tolerate missing files silently, but actions/upload-code-coverage exits 1 by default when its file input doesn't exist, failing the job.

This PR adds the same if: condition to all three upload steps so they are skipped whenever Run brew tests is skipped.

[Copilot]

Pull request overview

Fixes CI failures in the tests (online) matrix on push events by ensuring coverage upload steps are skipped whenever Run brew tests is intentionally skipped (so the coverage XML is not present).

Changes:

• Add the existing Run brew tests guard condition to the Codecov test results upload step.
• Add the same guard to the Codecov coverage upload step.
• Add the same guard to the GitHub actions/upload-code-coverage step to avoid failing on a missing coverage file.

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[github-code-quality]

Code Coverage Overview

Languages: Ruby

Ruby / code-coverage/simplecov

The overall coverage remains at 78%, unchanged from the main branch.

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_{Updated May 30, 2026 04:20 UTC
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[MikeMcQuaid]

Thanks!

[MikeMcQuaid]

Thanks!