"CI :: Build" job fails in KJarLoadingTest because of missing kjar build

See https://github.com/apache/incubator-kie-drools/pull/6818
If we raise a PR updating only a file in `drools-wiring` (or `drools-core` etc.), GHA `CI :: Build` jobs constantly fail with 
```
2026-07-21T05:43:20.3710060Z [ERROR] Tests run: 5, Failures: 0, Errors: 5, Skipped: 0, Time elapsed: 7.295 s <<< FAILURE! -- in org.drools.testcoverage.kieci.withdomain.KJarLoadingTest
2026-07-21T05:43:20.3711190Z [ERROR] org.drools.testcoverage.kieci.withdomain.KJarLoadingTest.testRulesFireOldCustomerWithAlcohol -- Time elapsed: 7.027 s <<< ERROR!
2026-07-21T05:43:20.3712290Z java.lang.RuntimeException: Cannot find KieModule: org.drools.testcoverage:drools-kie-ci-with-domain-test-kjar:999-SNAPSHOT
2026-07-21T05:43:20.3713110Z    at org.drools.compiler.kie.builder.impl.KieServicesImpl.newKieContainer(KieServicesImpl.java:195)
2026-07-21T05:43:20.3713850Z    at org.drools.compiler.kie.builder.impl.KieServicesImpl.newKieContainer(KieServicesImpl.java:189)
2026-07-21T05:43:20.3714560Z    at org.drools.testcoverage.kieci.withdomain.KJarLoadingTest.init(KJarLoadingTest.java:50)
...
```
It is because `drools-kie-ci-with-domain-parent` requires `drools-kie-ci-with-domain-test-kjar` but doesn't have it as a dependency (it loads a kjar via maven local repo. Adding a dependency would spoil the purpose of this test). So `CiComputeBuildScopes` cannot list `drools-kie-ci-with-domain-test-kjar` as upstream, so it's not built.

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