deepseek: Add `tool_choice` field to DeepSeek request model (#56040)

Release Notes:

- N/A

reference: https://api-docs.deepseek.com/api/create-chat-completion/
166c53206eXiaobo Liu committed on 5/12/2026, 8:21:38 AM· committed by GitHubparent5776520
2 files changedLine totals unavailable