spec(draft): add missing HostCapabilities fields (updateModelContext and message)#653

hydrosquall wants to merge 1 commit intomodelcontextprotocol:mainmodelcontextprotocol/ext-apps:mainfrom

hydrosquall:cameron.yick/spec-draft-host-capabilities-drifthydrosquall/ext-apps:cameron.yick/spec-draft-host-capabilities-driftCopy head branch name to clipboard