Fix Reanimated v2 not being configured in production mode

[x] I've read the Contribution Guidelines.
[x] I've updated the CHANGELOG if necessary.
[x] I've ensured the unit and smoke tests are still passing - either by running yarn test:unit and yarn test:smoke:[ios|android] or by checking the appropriate CircleCI builds' statuses.
[x] I've manually tested whether the changes I made work as expected.

Fixes app crashing when using Reanimated v2.

expo / turtle