[SG-386] iOS Update user state when coming from background (#1952)

* SG-386 Updated active user when coming from background to the iOS app and the extension had switched users

* Added iOSExtensionActiveUserIdKey to preference keys

* Reorder iOS preference keys

src/App/App.xaml.cs

@@ -202,6 +202,7 @@ namespace Bit.App
 
         private async Task ResumedAsync()
         {
+            await _stateService.CheckExtensionActiveUserAndSwitchIfNeededAsync();
             await _vaultTimeoutService.CheckVaultTimeoutAsync();
             _messagingService.Send("startEventTimer");
             await UpdateThemeAsync();