Spring AI Zhipu AI model fails to retrieve usage info from ChatResponse upon chat completion

Bug description Zhipu AI model fails to retrieve usage info from ChatResponse upon chat completion

Environment Spring AI： 1.1.0

Minimal Complete Reproducible example When invoking the Zhipu chatModel class directly via its call() or stream() methods, the usage information is unavailable in the returned response.

Comment From: yunqilee69

I’ve submitted a PR to fix the issue; this is my first contribution, so please let me know if I’ve done anything wrong. PR Link