Crash while launching ssh shell from jump list

Version: 0.7.7.0

Steps to reproduce

- launch cmd shell
- right click on taskbar to bring up jump list
- click on shortcut to launch ssh shell
- all windows close

Usually there is no message seen in the logs but I did get lucky once and saw this in the logs
```
[ERR] Unobserved Task Exception
System.AggregateException: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (Object reference not set to an instance of an object.) ---> System.NullReferenceException: Object reference not set to an instance of an object.
at FluentTerminal.App.ViewModels.MainViewModel.CreateMenuViewModel() + 0xb1
at System.Action.Invoke() + 0x25
at FluentTerminal.App.Utilities.DispatcherExtensions.<>c__DisplayClass0_0.b__0() + 0x10
at Windows.Foundation.DeferralCompletedHandler.Invoke() + 0x25
at FluentTerminal.App!+0x14b27bc

--- End of inner exception stack trace ---
---> (Inner Exception #0) System.NullReferenceException: Object reference not set to an instance of an object.
at FluentTerminal.App.ViewModels.MainViewModel.CreateMenuViewModel() + 0xb1
at System.Action.Invoke() + 0x25
at FluentTerminal.App.Utilities.DispatcherExtensions.<>c__DisplayClass0_0.b__0() + 0x10
at Windows.Foundation.DeferralCompletedHandler.Invoke() + 0x25
at FluentTerminal.App!+0x14b27bc
<---

```