Site health check: Page cache not detected

Trellis has always used nginx microcaching, basically page caching.

The WordPress site health check fails the page caching test on Trellis though,
as it expects one or more caching-specific HTTP headers and values for page caching being considered working.
cache-control, expires, age, last-modified, etag, x-cache-enabled, x-cache-disabled, x-srcache-store-status, x-srcache-fetch-status

The response header for the frontend front page is Cache-Control: no-cache, must-revalidate, max-age=0. This would not satisfy the page caching test in WordPress site health.

Although this is less of an issue with agency sites, I would still want to see all health checks pass.
Can the header checks be modified to detect a Trellis-specific page caching header or behavior for example?