feat(app): Do not wait for all jobs to complete on startup

If we don't add the `await` keyword, the future is executed in the
background. This allows us to speed up app startup slightly.

mobile/lib/main.dart

@@ -268,14 +268,15 @@ class _TenTenOneAppState extends State<TenTenOneApp> {
       await runBackend(config);
       FLog.info(text: "Backend started");
 
-      await orderChangeNotifier.initialize();
-      await positionChangeNotifier.initialize();
-      await candlestickChangeNotifier.initialize();
+      orderChangeNotifier.initialize();
+      positionChangeNotifier.initialize();
+      candlestickChangeNotifier.initialize();
 
-      await logAppSettings(config);
+      logAppSettings(config);
 
-      final lastLogin = await rust.api.updateLastLogin();
-      FLog.debug(text: "Last login was at ${lastLogin.date}");
+      rust.api
+          .updateLastLogin()
+          .then((lastLogin) => FLog.debug(text: "Last login was at ${lastLogin.date}"));
     } on FfiException catch (error) {
       FLog.error(text: "Failed to initialise: Error: ${error.message}", exception: error);
     } catch (error) {