* Check for initialRoute before Navigator.defaultRouteName
* Default initialRoute to Navigator.defaultRouteName
* Take suggestions from code review
* Add test for old and new routes behavior
* Revert "Add test for old and new routes behavior"
This reverts commit 282fb64b165ed532583e9a5d2e4debe29469fba4.
* Retry: without dartfmt, with dartanalyzer
* Rename tests, check the routes are taken
* Fix flutter analyze --flutter-repo warnings
* Add test for initial vs default route
* Update test and fix analyzer warnings
* Add test for initial route only being used initially