Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/48767
## Motivation
Modernising the react-native codebase to allow for ingestion by modern Flow tooling.
## This diff
- Updates a handful of components in `Libraries/Components` to use `export` syntax
- `export default` for qualified objects, many `export` statements for collections (determined by how it's imported)
- Appends `.default` to requires of the changed files.
- Updates test files.
- Updates the public API snapshot (intented breaking change)
Changelog:
[General][Breaking] - Files inside `Libraries/Components` use `export` syntax, which requires the addition of `.default` when imported with the CJS `require` syntax.
Reviewed By: yungsters
Differential Revision: D68335872
fbshipit-source-id: eb0c67039edfe92e9e133726f6b01900dd2c2322