Is your feature request related to a problem?

Run axe-core.run() on every snapshot during integration test to catch accessibility issues sooner.

Describe the suggestion or request in detail

Add axe-core to our test harness. Run axe-core.run() after every host.snapshot() and on-demand.

Describe alternatives you have considered

No response

Additional context

Related to https://ceacc.visualstudio.com/accessibility%20testing/_workitems/edit/141746.

Examples at https://github.com/microsoft/axe-pipelines-samples/tree/main/typescript-selenium-webdriver-sample.