Iryna Kulakova
302c35b0bb
Add NormalizeContentType middleware that strips optional parameters (e.g. charset=utf-8) from application/json Content-Type headers before the request reaches the Go SDK's StreamableHTTP handler, which performs strict string matching. Per RFC 8259, the charset parameter is redundant for JSON but must be accepted per HTTP semantics. Fixes #2333 Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>