Tapping "Set your location" while popover tip is showing breaks location action sheet

[cselin]

While attempting to repro #426, I noticed that the menu popover tip breaks location sheet functionality until a restart.

Repro steps:

1. Upon fresh install, dismiss welcome screen and note that popover is not shown (due to conflicts with welcome screen presentation.
2. Restart app and note menu popover is shown
3. Tap "Set your location" which dismisses popover, but does not show location action sheet due to presentation race condition. Repeated taps on "Set your location" still does not show location action sheet even though showLocationSheet is toggled between true/false 😕