Add try/catch block in case launch url throws a platform exception

lib/src/screens/settings/widgets/settings_link_provider_cell.dart

@@ -30,6 +30,8 @@ class SettingsLinkProviderCell extends StandardListRow {
           color: Palette.blueCraiola));
 
   static void _launchUrl(String url) async {
-    await launch(url, forceSafariVC: false);
+    try {
+      await launch(url, forceSafariVC: false);
+    } catch (e) {}
   }
 }

lib/view_model/support_view_model.dart

@@ -18,7 +18,9 @@ abstract class SupportViewModelBase with Store {
       RegularListItem(
         title: S.current.faq,
         handler: (BuildContext context) async {
-          await launch(url);
+          try {
+            await launch(url);
+          } catch (e) {}
         },
       ),
       LinkListItem(