test: disable streaming in TypeScript chatbot example #1936

Job	Run time
python / Check Python E2E tests	14s
python / Check Python library	52s
python / Check Python chatbot	13s
typescript / Check Typescript chatbot	33s
typescript / Check Typescript E2E tests	32s
cdk / Check Python-based Time Server	2m 9s
cdk / Check Python-based Zen Server	53s
cdk / Check Python-based Dad Jokes Server	1m 57s
cdk / Check Typescript-based Cognito stack	20s
cdk / Check Python-based Book Search Server	2m 9s
typescript / Check Typescript library	41s
cdk / Check Python-based MCP Doc Server	2m 3s
cdk / Check Typescript-based Dog Facts Server	1m 28s
cdk / Check Typescript-based Weather Alerts Server	1m 36s
cdk / Check Typescript-based Dictionary Server	1m 39s
cdk / Check Typescript-based Cat Facts Server	1m 35s
	18m 54s

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