feat: save exportScale in AppState (#3580)

Co-authored-by: David Luzar <luzar.david@gmail.com>
Co-authored-by: dwelle <luzar.david@gmail.com>

src/components/LayerUI.tsx

@@ -400,13 +400,11 @@ const LayerUI = ({
 
     const createExporter = (type: ExportType): ExportCB => async (
       exportedElements,
-      scale,
     ) => {
       await exportCanvas(type, exportedElements, appState, {
         exportBackground: appState.exportBackground,
         name: appState.name,
         viewBackgroundColor: appState.viewBackgroundColor,
-        scale,
       })
         .catch(muteFSAbortError)
         .catch((error) => {