allow saving chart images (#28546)

...d/src/metabase/actions/components/ActionViz/ActionViz.tsx

frontend/src/metabase/components/DownloadButton.jsx

...e/dashboard/components/DashCard/DashCardVisualization.tsx

frontend/src/metabase/icon_paths.ts

frontend/src/metabase/public/containers/PublicQuestion.jsx

...metabase/query_builder/components/QueryDownloadWidget.jsx

.../metabase/query_builder/components/QueryVisualization.jsx

...tyled-components/components/GlobalStyles/GlobalStyles.tsx

...visualizations/components/Visualization/Visualization.jsx

frontend/src/metabase/visualizations/index.js

frontend/src/metabase/visualizations/lib/save-chart-image.ts

frontend/src/metabase/visualizations/lib/utils.js

.../visualizations/visualizations/LinkViz/LinkVizSettings.ts

...c/metabase/visualizations/visualizations/ObjectDetail.jsx

...e/visualizations/visualizations/PivotTable/PivotTable.tsx

...end/src/metabase/visualizations/visualizations/Scalar.jsx

...rc/metabase/visualizations/visualizations/SmartScalar.jsx

...tend/src/metabase/visualizations/visualizations/Table.jsx

.../src/metabase/visualizations/visualizations/Text/Text.jsx

frontend/test/__support__/e2e/config.js