A/C:

• The tests should respect the taintedReferencesEnabled setting
• The tests should assert that the icon doesn't appear on page load
• The tests should assert that the icon appears once a statement was changed, but the references weren't touched
• The tests should assert that the icon disappears once edit mode on the statement is entered again

For the setup in other Vue-based components, please see client/data-bridge/tests/selenium/ and view/lib/wikibase-termbox/tests/selenium/.