Tapping Settings while on Settings > Connection appeared to do nothing. The tab
navigated to its own route, but restoreState = true then restored that tab's
saved back stack, putting the sub-screen straight back on top. The only way out
was the back button or a back swipe.
When the tap targets the tab already in use and the current destination is deeper
inside it, pop back to the tab's own screen instead of navigating. Only entries
above the tab root are removed, so Back and back-swipe behave exactly as before -
both routes out of a sub-screen now work.
The tab also stayed unhighlighted while any sub-screen was open, because selected
compared the current route for equality with the tab's route. Ownership is now
derived from the existing route naming convention, so settings/connection belongs
to Settings and trip_review/{tripId} belongs to Trips. A new settings/* screen is
picked up automatically; a sub-screen named outside its tab's prefix would need a
line in ownsRoute.
Ashin Walpola
081347f31b