Fix dashboards Jest tests and fix ESLint warnings

frontend/src/metabase/components/EmptyState.jsx

frontend/src/metabase/components/FilterWidget.jsx

...tend/src/metabase/dashboards/components/DashboardList.jsx

...nd/src/metabase/dashboards/components/WhatsADashboard.jsx

...end/src/metabase/dashboards/containers/Dashboards.spec.js

...shboards/containers/__snapshots__/Dashboards.spec.js.snap

...c/metabase/internal/__snapshots__/components.spec.js.snap

frontend/test/e2e/query_builder/query_builder.spec.js

package.json

yarn.lock