fix: Truncate gateway names in integ tests #936

Job	Run time
python / Check Python chatbot	8s
python / Check Python E2E tests	9s
python / Check Python library	52s
typescript / Check Typescript chatbot	34s
typescript / Check Typescript library	41s
cdk / Check Typescript-based Weather Alerts Server	1m 43s
typescript / Check Typescript E2E tests	31s
cdk / Check Typescript-based Cat Facts Server	1m 31s
cdk / Check Python-based Dad Jokes Server	1m 53s
cdk / Check Typescript-based Dictionary Server	1m 51s
cdk / Check Python-based MCP Doc Server	2m 3s
cdk / Check Python-based Time Server	1m 53s
cdk / Check Typescript-based Dog Facts Server	1m 29s
cdk / Check Typescript-based Cognito stack	22s
cdk / Check Python-based Book Search Server	2m 9s
cdk / Check Python-based Inspiration Server	36s
	18m 25s

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