write fantom tests percentage based width and height (#48560)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/48560

changelog: [internal]

add tests for width and height and margin style. Covering percentage-based dimensions and invalid inputs.

The test coverage is needed to make removal of folly::tryTo safe.

Reviewed By: rubennorte

Differential Revision: D67942139

fbshipit-source-id: c1e517dfb102eea892c998cf6ff4190fa69cdfa7