Bug 1847307 made the retailer name dynamic in the explainer component, but the mock data hasn't been updated to make this work; the tests throw a lot of errors of the form

JavaScript error: , line 0: InvalidStateError: [fluent][resolver] errors in en-US/shopping-analysis-explainer-highlights-description: Resolver error: Unknown variable: $retailer

however, these errors don't cause the tests to fail, and the component renders correctly. This bug tracks deferred cleanup until after 119 ships.