collab: Capture upstream input/output rate limits from Anthropic (#28106)

This PR makes it so we capture the upstream rate limit information from
Anthropic for input and output tokens.

Release Notes:

- N/A
1a899fda60Marshall Bowers committed on 4/4/2025, 5:09:00 PM· committed by GitHubparent183f57f
2 files changedLine totals unavailable