Undici dispatcher mismatch guidance improved; text/plan uploads fixed

6.39.1 (2026-05-27)

Full Changelog: v6.39.0...v6.39.1

Bug Fixes

• Improve undici dispatcher mismatch guidance (#1898) (b6e5fd6)
• treat text/plan with format: binary as raw upload (f9a632a)
• treat text/plan with format: binary as raw upload (323cb78)

Chores

• internal: codegen related update (d32deef)