chore: add metadata labels to gRPC metrics as well (!3656) · Merge requests · GitLab.org / ModelOps / AI Assisted (formerly Applied ML) / Code Suggestions / AI Gateway · GitLab

What does this merge request do and why?

chore: add metadata labels to gRPC metrics as well

This is built on !3648 (merged)

It ensures the extra metadata labels are also in our gRPC metrics which show the gRPC code.

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

Merge request checklist

Tests added for new functionality. If not, please raise an issue to follow up.
Documentation added/updated, if needed.
If this change requires executor implementation: verified that issues/MRs exist for both Go executor and Node executor or confirmed that changes are backward-compatible and don't break existing executor functionality.