fix: enable DNS rebinding protection by default for secure-by-default#2275

Jah-yee wants to merge 2 commits intomodelcontextprotocol:mainmodelcontextprotocol/python-sdk:mainfrom

Jah-yee:fix/dns-rebinding-secure-by-defaultJah-yee/python-sdk:fix/dns-rebinding-secure-by-defaultCopy head branch name to clipboard