[test] Add a test for cancellable #660

Job	Run time
Semantic Version label check	6s
musl	1m 34s
Unit tests / Construct unit test matrix	3s
Integration Tests / Test archive plugin (ResourcesPackaging)	2m 25s
Integration Tests / No dependencies on Foundation	2m 33s
Integration Tests / Test archive plugin (HelloWorld)	2m 37s
Integration Tests / Test Examples/APIGateway on	1m 52s
Integration Tests / Test Examples/S3EventNotifier on	3m 3s
Integration Tests / Test Examples/BackgroundTasks on	1m 50s
Integration Tests / Test Examples/APIGateway+LambdaAuthorizer on	2m 3s
Integration Tests / Test Examples/S3_AWSSDK on	6m 30s
Integration Tests / Test Examples/Streaming on	1m 52s
Integration Tests / Test Examples/HelloJSON on	1m 45s
Integration Tests / Test Examples/ResourcesPackaging on	1m 51s
Integration Tests / Test Examples/HelloWorld on	1m 45s
Integration Tests / Test Examples/S3_Soto on	7m 43s
Integration Tests / Test Examples/Tutorial on	1m 46s
Integration Tests / Test Examples/Testing on	1m 52s
Soundness / Python lint check	7s
Soundness / Documentation check	1m 35s
Soundness / Shell check	37s
Soundness / License headers check	5s
Soundness / YAML lint check	5s
Soundness / Format check	36s
Soundness / API breakage check	2m 52s
Soundness / Unacceptable language check	4s
Soundness / Broken symlinks check	3s
Swift 6 Language Mode / Swift 6 language mode	1m 21s
Unit tests / Unit tests / Linux (nightly-main)	1m 58s
Unit tests / Unit tests / Linux (6.1)	1m 30s
Unit tests / Unit tests / Linux (nightly-next)	1m 57s
Unit tests / Unit tests / Linux (6.0)	1m 29s
	57m 29s

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