* 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