making ordered invocations the default

[brettsam]

This has been rolled out via hosting config to a majority of stamps for several months. Making this the default going forward, but allowing for disablement should something arise. Eventually we can remove that as well, but it's not as urgent.

The original PR that introduced it (for more context) is here: #9657

Pull request checklist

IMPORTANT: Currently, changes must be backported to the in-proc branch to be included in Core Tools and non-Flex deployments.

• Backporting to the in-proc branch is not required
  • Otherwise: Link to backporting PR: making ordered invocations the default (#10201) #10207
• 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)