Summary:We'd plan to build the `NavigationLegacyNavigator` that is meant to replace
Navigator seemlessly without API changes. While the APIs remain
compatible with Navigator, it should be built with the new
Navigation API such as `NavigationAnimatedView`...etc.
To ensure that the new NavigationLegacyNavigagtor delivers the same
UX and maintains APIs compability, we'd start with using the exact same
examples as the same ones that Navigator uses.
Reviewed By: ericvicenti
Differential Revision: D2955273
fb-gh-sync-id: b4723cf54ea2258e5589f39dceeaee88be2b93f0
shipit-source-id: b4723cf54ea2258e5589f39dceeaee88be2b93f0
Hedger Wang