enable neo4j+gateway at test sample.

[mshima]

Test if https://github.com/jhipster/generator-jhipster/issues/18744 still applies.

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[mraible]

Needs rebase.

[mraible]

@mshima Needs another rebase.

[mraible]

@mshima Since tests are still failing, does this mean that Spring Cloud Gateway and Neo4j don't work well together?

[mshima]

Maybe related to neo4j with reactive been broken for a while at daily builds https://github.com/hipster-labs/jhipster-daily-builds/actions/workflows/neo4j.yaml. I think the error should be easy.

Or we should just close this PR.

[atomfrede]

Don't close it. I will have a look at the webflux part. It indeed looks like an error which should be easy to find I hope.