fix: fix `agentic_generative_ui` example in ADK dojo#758

brandonmcconnell merged 1 commit intomainag-ui-protocol/ag-ui:mainfrom

fix/adk-agentic_generative_ui-optional-syntaxag-ui-protocol/ag-ui:fix/adk-agentic_generative_ui-optional-syntaxCopy head branch name to clipboard