Amend Java system variable fix to be more specific

What does this MR do and why?

An addendum to the patch for Windows server stats. We only need to be changing the path to java on startup for cases with the PATH env variable set to oracle java's path. This could have bad side effects for users using java in their startup string that do not use Oracle Java.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• Have you checked this doesn't interfere/conflict/duplicate someone elses work?
• Have you fully tested your changes?
• Have you resolved any lint issues?
• Have you assigned a reviewer?
• Have you applied correct labels?
• Have you updated CHANGELOG.md?