build: elide the JavaKitMacroTests #285

Job	Run time
Java tests (swift:nightly-main jdk:Corretto os:jammy)	6m 17s
Swift tests (swift:nightly-main jdk:Corretto os:jammy)	4m 17s
soundness / Broken symlinks check	5s
soundness / API breakage check	0s
soundness / Format check	0s
soundness / Documentation check	40s
soundness / License headers check	6s
soundness / Python lint check	4s
soundness / Shell check	40s
soundness / Unacceptable language check	3s
soundness / YAML lint check	7s
	12m 19s

Provide feedback