Allow to disable Stage View in the main job page through system property

[felipecrs]

I have some really big jobs and my Jenkins server is running slow. Upon investigation, I noticed that Jenkins spends a lot of time processing API requests from this plugin.

While the Stage View information is very useful, I do not need it to be opened automatically when I open a job. There is a Full Stage View button in the job page that I can click if I want to see it.

This PR allows to disable the automatic opening of the Stage View when a job is opened. This is done by adding a new system property org.jenkinsci.pipeline.stageview.disabledOnMainJobPage as true. If not set, it behaves as before.

Testing done

Works great in my local tests.

Submitter checklist

• Make sure you are opening from a topic/feature/bugfix branch (right side) and not your main branch!
• Ensure that the pull request title represents the desired changelog entry
• Please describe what you did
• Link to relevant issues in GitHub or Jira
• Link to relevant pull requests, esp. upstream and downstream changes
• Ensure you have provided tests - that demonstrates feature works or fixes the issue

[olamy]

Sounds reasonable change but can you add some documentation about this in the README in the dedicated section?
https://github.com/jenkinsci/pipeline-stage-view-plugin?tab=readme-ov-file#configurable-properties
Thanks

[felipecrs]

Sounds reasonable change but can you add some documentation about this in the README in the dedicated section? jenkinsci/pipeline-stage-view-plugin#configurable-properties Thanks

Absolutely!

[felipecrs]

@olamy done. I tried to keep the same text style of the existing ones.

[felipecrs]

@olamy I am extremely grateful for your quick expedition of this PR. :)