fix(patterns): align langgraph and strands agents with AG-UI docs#81

ranst91 wants to merge 2 commits intoawslabs:mainawslabs/fullstack-solution-template-for-agentcore:mainfrom

CopilotKit:fix/agui-impl-docs-alignmentCopilotKit/fullstack-solution-template-for-agentcore:fix/agui-impl-docs-alignmentCopy head branch name to clipboard