Summary: public
Navigator subscribes to its internal animation spring that may still
asks navigator to re-render after being unmounted.
This diff clears the listeners of its animation spring once navigator
is unmounted.
Reviewed By: zjj010104
Differential Revision: D2588434
fb-gh-sync-id: 2b3ee65d3a6c3d45e5c6904d1dc65ac5a3e4534a