#19735 [Feature]: Include metadata for list_mcp_tools in StandardLoggingPayload
### Check for existing issues
- [x] I have searched the existing issues and checked that my issue is not a duplicate.
### The Feature
list_mcp_tools calls generate a custom callback call since https://github.com/BerriAI/litellm/commit/872e5b98977eac7eea95be6fd6069e751709960a
But the payload provided does not contain much, particularly it lacks mcp_server_name, ie where the list_mcp_tools call was targeted to.
### Motivation, pitch
Better observability of mcp protocol
### What part of LiteLLM is this about?
Proxy
### LiteLLM is hiring a founding backend engineer, are you interested in joining us and shipping to all our users?
No
### Twitter / LinkedIn details
https://www.linkedin.com/in/jeromeroussin/