[mediaqueries-5] `prefers-contrast: high` media feature doesn't account for macOS and iOS

[mozilla-apprentice]

A resolution was made for csswg-drafts/#2943.

[mediaqueries-5] `prefers-contrast: high` media feature doesn't account for macOS and iOS

• RESOLVED: Change high and low in the MQ to more and less

Discussion.

---

To file a bug automatically for these resolutions, add the bug label to the issue.

If no bug is needed, the issue can be closed.

[dholbert]

@zekemedley is already on top of this in https://bugzilla.mozilla.org/show_bug.cgi?id=1658780