tfjs-react-native is failing CI tests

[mattsoulanille]

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System information
Docker CI image (gcr.io/learnjs-174218/release) on Google Cloud Build running presubmits for #6390.

Describe the current behavior
From #6390, which fixed several tests not being run, it was discovered that tfjs-react-native unit tests are failing on GCP. See presubmits for #6390 for the error message.

To quickly merge #6390, which fixes #6384, tfjs-react-native was removed from scripts/package_dependencies.json. These tests were not running before #6390 due to #6384, and should be added back once they are passing.
Describe the expected behavior
tfjs-react-native unit tests pass on GCP.

Standalone code to reproduce the issue
Add tfjs-react-native to scripts/package_dependencies.json and run presubmits.

yarn generate-cloudbuild-for-packages tfjs-react-native
./scripts/run-build.sh

Other info / logs

presubmits for #6390.