mcp_client_name no longer dropped from alternating events

0.5.1

Patch Changes

• #4009 ae68de1 Thanks @gesh! - Fix $mcp_client_name being dropped from every other captured event. getSessionInfo cached the client identity but then overwrote the cache with undefined on the next event, so consecutive tool calls alternated between carrying and lacking the client name (showing up as a large "other" slice in MCP analytics). The cached client name/version are now reused instead of refetched. (2026-06-29)