consume-incrementals profile should be activated on demand not by default

### Jenkins and plugins versions report

By activating the profile unconditionally things like dependabot or other tools should/will see it as active and can do things like propose PRs for incremental versions.

the profile should only be activated where developers explicity desire it,
for exanple by adding a marker file in CI, by activating the profile sporadically locally for testing (`-Pconsume-incrementals`) or activating the profile more sidely by setting MAVEN_ARGS or setting the profile to be active in their settings.xml

### What Operating System are you using (both controller, and any agents involved in the problem)?

All

### Reproduction steps

incrementalify a plugin
add an incremental dependency to the plugin
run mvn test

### Expected Results

the build should fail as the dependency can not be found (until the `consume-incrementals` is activated)

### Actual Results

the build passes, and the incremental revision is fixed.

### Anything else?

https://github.com/jenkinsci/bom/pull/6234#issuecomment-5283694324
https://github.com/jenkinsci/archetypes/pull/953
https://github.com/jenkins-infra/jenkins.io/pull/9339

### Are you interested in contributing a fix?

_No response_

Start with the Maven profile configuration responsible for consume-incrementals and reproduce the issue by incrementalifying a plugin, adding an incremental dependency, and running mvn test. Done means the build fails without explicit profile activation and works when consume-incrementals is enabled through the documented mechanisms.

Written by the indexing model from the issue text.