Validate RN JS API snapshot on CI (#52352)

Summary:
Pull Request resolved: #52352

This diff adds excution of `yarn build-types --validate` to run RN JS API snapshot validation on CI.

### Motivation

Detect react-native public API changes before they land.

Changelog:
[Internal]

Reviewed By: huntie

Differential Revision: D76340729

fbshipit-source-id: 10c465418e0ba4eb05cf557a16119f9756843d9e

Author: coado

scripts/run-ci-javascript-tests.js

@@ -56,6 +56,15 @@ try {
     throw Error(exitCode);
   }
 
+  describe('Test: Validate JS API snapshot');
+  if (execSync(`${YARN_BINARY} run build-types --validate`).code) {
+    echo(
+      'JS API snapshot validation failed. Please run `yarn build-types` to update the snapshot.',
+    );
+    exitCode = 1;
+    throw Error(exitCode);
+  }
+
   describe('Test: Flow check');
   const flowCommand =
     FLOW_BINARY == null