Don't enable form element path in unit tests by default

[timja]

Reports that HtmlUnit isn't performant enough...

see jenkinsci/bom#746 (comment)

Draft till it's validated this fixes it

See JENKINS-XXXXX.

Proposed changelog entries

• Developer: Disable form element path in unit tests by default.

Proposed upgrade guidelines

N/A

Submitter checklist

• (If applicable) Jira issue is well described
• Changelog entries and upgrade guidelines are appropriate for the audience affected by the change (users or developer, depending on the change). Examples
  • Fill-in the Proposed changelog entries section only if there are breaking changes or other changes which may require extra steps from users during the upgrade
• Appropriate autotests or explanation to why this change has no tests
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Desired reviewers

@mention

Maintainer checklist

Before the changes are marked as ready-for-merge:

• There are at least 2 approvals for the pull request and no outstanding requests for change
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[jglick]

So the question is whether ATH is explicitly enabling this via system property?

[timja]

So the question is whether ATH is explicitly enabling this via system property?

it is already, I just wanted to PR bom first to make sure this fixes it

[basil]

This PR is now ready for merge. We will merge it after approximately 24 hours if there is no negative feedback. Please see the merge process documentation for more information about the merge process. Thanks!