Issues with workitem identifier and dependencies

I do GET /taskWorkItems and look into the "identifier" and the "dependencies" fields.

• I see some configuration identifiers being the same for many of the "Test", "Build" and the "Provision" workitems. For example 'macos-14-arm64-tart-developer-build-tests' or 'qemu-arm64-developer-build'.
• I see some "Test" workitems with no "dependencies" at all.
• I see some "Provision" workitems with dependencies.
• Since I'm trying to build a tree of workitem inter-dependencies, the only workitems allowed to have no dependency are the "Provision" ones.