jdk17: quarkus_quickstarts_test kogito-quickstart failed

jdk17: quarkus_quickstarts_test kogito-quickstart failed with tag 2.7.2.Final

```
18:29:02 2022-03-29 22:29:01,308 INFO [io.quarkus] (main) Installed features: [cdi, kogito-decisions, kogito-predictions, kogito-processes, kogito-rules, resteasy, resteasy-jackson, smallrye-context-propagation, vertx]
18:29:09 [ERROR] Tests run: 2, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 47.836 s <<< FAILURE! - in org.acme.kogito.PersonProcessTest
18:29:09 [ERROR] org.acme.kogito.PersonProcessTest.testChild Time elapsed: 0.502 s <<< FAILURE!
18:29:09 java.lang.AssertionError:
18:29:09 1 expectation failed.
18:29:09 JSON path $.size doesn't match.
18:29:09 Expected: is <1>
18:29:09 Actual: <[]>
18:29:09
18:29:09 at org.acme.kogito.PersonProcessTest.testChild(PersonProcessTest.java:51)
18:29:09
18:29:09 2022-03-29 22:29:09,082 INFO [io.quarkus] (main) Quarkus stopped in 0.099s
18:29:09 [INFO]
18:29:09 [INFO] Results:
18:29:09 [INFO]
18:29:09 [ERROR] Failures:
18:29:09 [ERROR] PersonProcessTest.testChild:51 1 expectation failed.
18:29:09 JSON path $.size doesn't match.
18:29:09 Expected: is <1>
18:29:09 Actual: <[]>
18:29:09
18:29:09 [INFO]
18:29:09 [ERROR] Tests run: 2, Failures: 1, Errors: 0, Skipped: 0
...
...
18:29:09 [INFO] kogito-quickstart 1.0.0-SNAPSHOT ................... FAILURE [ 57.188 s]
```

https://ci.adoptopenjdk.net/view/work-in-progress/job/grinder_sandbox_new/575/console

Start with org.acme.kogito.PersonProcessTest.testChild at PersonProcessTest.java:51 and reproduce the kogito-quickstart failure from the linked CI job using JDK 17 and tag 2.7.2.Final. Investigate why the JSON path $.size returns [] instead of 1; done means the failing test passes without changing its expected behavior.

Written by the indexing model from the issue text.