Summary: Google Talkback identifies nodes with supported actions up, down, left and right to be of the role Pager. Reference here: https://github.com/google/talkback/blob/master/utils/src/main/java/com/google/android/accessibility/utils/Role.java#L376-L385 This diff give us the ability to correctly calculate those roles when we come across them in flipper Reviewed By: blavalla Differential Revision: D40449485 fbshipit-source-id: 5a9dfe3f807b7fce8043eaab2695d864f93a1392