Allow using Elasticsearch Dev Services by multiple extensions

[loicmathieu]

Fixes #23904

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Failing Jobs - Building 402e887

Status	Name	Step	Failures	Logs	Raw logs
✖	Initial JDK 11 Build	Build	Failures	Logs	Raw logs

Failures

⚙️ Initial JDK 11 Build #

- Failing: extensions/elasticsearch-rest-client-common/deployment 
! Skipped: docs extensions/elasticsearch-rest-client/deployment extensions/elasticsearch-rest-high-level-client/deployment and 9 more

📦 extensions/elasticsearch-rest-client-common/deployment

✖ Failed to execute goal net.revelc.code.formatter:formatter-maven-plugin:2.17.1:validate (default) on project quarkus-elasticsearch-rest-client-common-deployment: File '/home/runner/work/quarkus/quarkus/extensions/elasticsearch-rest-client-common/deployment/src/main/java/io/quarkus/elasticsearch/restclient/common/deployment/DevServicesElasticsearchProcessor.java' has not been previously formatted. Please format file and commit before running validation!

[yrodiere]

LGTM, thanks!

[loicmathieu]

One thing that bother me is if at the Hibernate Search side there is no usage of the default backend but multiple other one. We will start a container.
Maybe we need to check if the default backend exists and no default backend defined don't generate the build item.

[yrodiere]

Maybe we need to check if the default backend exists and no default backend defined don't generate the build item.

Right, done: #24012