improve "done" toast

src/App.jsx

@@ -1054,19 +1054,21 @@ const App = memo(() => {
         });
       }
 
+      const msgs = [i18n.t('Done! Note: cutpoints may be inaccurate. Make sure you test the output files in your desired player/editor before you delete the source. If output does not look right, see the HELP page.')];
+
+      // https://github.com/mifi/lossless-cut/issues/329
+      if (isIphoneHevc(fileFormatData, mainStreams)) msgs.push(i18n.t('There is a known issue with cutting iPhone HEVC videos. The output file may not work in all players.'));
+
       if (exportExtraStreams && enabledOutSegments.length > 1) {
         try {
           await extractStreams({ filePath, customOutDir, streams: nonCopiedExtraStreams });
+          msgs.push(i18n.t('Unprocessable streams were exported as separate files.'));
         } catch (err) {
           console.error('Extra stream export failed', err);
         }
       }
 
-      // https://github.com/mifi/lossless-cut/issues/329
-      const extraIphoneMsg = isIphoneHevc(fileFormatData, mainStreams) ? ` ${i18n.t('There is a known issue with cutting iPhone HEVC videos. The output file may not work in all players.')}` : '';
-      const extraStreamsMsg = exportExtraStreams ? ` ${i18n.t('Unprocessable streams were exported as separate files.')}` : '';
-
-      if (!hideAllNotifications) openDirToast({ dirPath: outputDir, text: `${i18n.t('Done! Note: cutpoints may be inaccurate. Make sure you test the output files in your desired player/editor before you delete the source. If output does not look right, see the HELP page.')}${extraIphoneMsg}${extraStreamsMsg}`, timer: 15000 });
+      if (!hideAllNotifications) openDirToast({ dirPath: outputDir, text: msgs.join(' '), timer: 15000 });
     } catch (err) {
       console.error('stdout:', err.stdout);
       console.error('stderr:', err.stderr);