fix(api): align types of input items / output items for typescript

Author: stainless-app[bot]

.stats.yml

@@ -1,4 +1,4 @@
 configured_endpoints: 135
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/openai%2Fopenai-ca24bc4d8125b5153514ce643c4e3220f25971b7d67ca384d56d493c72c0d977.yml
-openapi_spec_hash: c6f048c7b3d29f4de48fde0e845ba33f
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/openai%2Fopenai-a7e92d12ebe89ca019a7ac5b29759064eefa2c38fe08d03516f2620e66abb32b.yml
+openapi_spec_hash: acbc703b2739447abc6312b2d753631c
 config_hash: b876221dfb213df9f0a999e75d38a65e