Add DEFINES_MODULE=YES to the yoga podspec

[janicduplessis]

Summary

This fixes an error when using RN's version of yoga with Flipper.

[!] The following Swift pods cannot yet be integrated as static libraries:

The Swift pod `YogaKit` depends upon `Yoga`, which does not define modules. To opt into those targets generating module maps (which is necessary to import them from Swift when building as static libraries), you may set `use_modular_headers!` globally in your Podfile, or specify `:modular_headers => true` for particular dependencies.

Taken from https://github.com/facebook/yoga/blob/master/Yoga.podspec#L25

Changelog

[Internal] [Fixed] - Add DEFINES_MODULE=YES to the yoga podspec

Test Plan

Tested that pod install now works in an app.

[janicduplessis]

cc @axemclion

[facebook-github-bot]

@axe-fb has imported this pull request. If you are a Facebook employee, you can view this diff on Phabricator.

[axe-fb]

Imported, waiting for review. Thanks @janicduplessis

[react-native-bot]

This pull request was successfully merged by @janicduplessis in 0165489.

^{When will my fix make it into a release? | Upcoming Releases}