Projects should not include both resteasy-reactive and non reactive

When migrating to Quarkus 3, we noticed an issue on some projects because they are importing both reactive and non reactive libraries, which are not compatible.

In Quarkus 2, this does not create any issue but in Quarkus 3, this is breaking the tests and most probably examples ...

Here are the noticed impacted integration tests:

• integration-tests-quarkus-processes-reactive
• integration-tests-quarkus-source-files

Attached is the dependency tree in Q3 of `integration-tests-quarkus-source-files` and you can both `resteasy-common` and `resteasy-reactive` are included. Which creates a runtime issue.

See also Quarkus team comments: https://quarkusio.zulipchat.com/#narrow/stream/187038-dev/topic/Conflict.20between.20resteasy.20common.20and.20reactive