Don't fail for global_max_parallel_requests = 1

[vvidovic]

When global_max_parallel_requests was set to 1, all requests failed.

Title

Fix global_max_parallel_requests initial request

Relevant issues

Pre-Submission checklist

Please complete all items before asking a LiteLLM maintainer to review your PR

• I have Added testing in the tests/litellm/ directory, Adding at least 1 test is a hard requirement - see details
• I have added a screenshot of my new test passing locally
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• My PR's scope is as isolated as possible, it only solves 1 specific problem

Type

🐛 Bug Fix
✅ Test

Changes

• Fix global_max_parallel_requests initial request

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
litellm	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Apr 23, 2025 6:05am

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[vvidovic]

Any news about this PR?
I signed CLA, as visible in the: #9175. For some reason, in this PR it is not visible.

[vvidovic]

@ishaan-jaff - did you have time to check this PR?

[github-actions]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.