fix: invalid url error if env OPENAI_BASE_URL is empty string

[li-yechao]

• I understand that this repository is auto-generated and my pull request may not be merged

Changes being requested

Additional context & links

[rattrayalex]

Thanks, this change has been incorporated elsewhere!

openai-node/src/index.ts

Line 132 in d094e83

baseURL: baseURL || `https://api.openai.com/v1`,

openai-node/src/core.ts

Line 1014 in d094e83

return process.env?.[env]?.trim() ?? undefined;