Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/53912
Changelog: [Internal]
Add new fantom flag `fantom_disable_coverage` to be used in tests that are sensitive to things like memory allocation.
Also disable coverage for any benchmark test.
Reviewed By: arushikesarwani94
Differential Revision: D83070065
fbshipit-source-id: a885e79e3d0c88cfb7adef30cb60ab46a617edac