Framework golden tests are failing on 3.16 stable infra

Example failure: https://ci.chromium.org/ui/p/flutter/builders/prod/Linux%20web_canvaskit_tests_6/11802/overview

This started from https://github.com/flutter/flutter/pull/139162, which seems expected. What's unexpected is the tests are failing.