Don't run the internal integration tests on the packaged SDK. (#350)

* Don't run the internal integration tests on the packaged SDK.

Author: jonsimantov

scripts/gha/build_testapps.py

@@ -224,7 +224,7 @@ def main(argv):
   failures = []
   for testapp in testapps:
     api_config = config.get_api(testapp)
-    if FLAGS.repo_dir and api_config.internal_testapp_path:
+    if FLAGS.repo_dir and not FLAGS.packaged_sdk and api_config.internal_testapp_path:
       testapp_dirs = [api_config.internal_testapp_path]
     else:
       testapp_dirs = [api_config.testapp_path]