Ensure worker process is executable in linux consumption

[jviau]

Issue describing the changes in this PR

resolves #9522

Pull request checklist

• My changes do not require documentation changes
  • Otherwise: Documentation issue linked to PR
• My changes should not be added to the release notes for the next release
  • Otherwise: I've added my notes to release_notes.md
• My changes do not need to be backported to a previous version
  • Otherwise: Backport tracked by issue/PR #issue_or_pr
• My changes do not require diagnostic events changes
  • Otherwise: I have added/updated all related diagnostic events and their documentation (Documentation issue linked to PR)
• I have added all required tests (Unit tests, E2E tests)

Additional information

This PR moves the logic to ensure the worker process is executable from HttpWorkerProcess to the base-class WorkerProcess. This ensures both HTTP and RPC worker process implementations will work for linux consumption.