UCE Test:
ONCE() and INIT()
This page calls the same named component twice. `ONCE()` should only run once for the request, while `INIT()` should stay stable for the currently loaded worker copy.
First component call
worker INIT count for this loaded unit: 0
request ONCE count for this request: 1
component handler calls served by this worker copy: 1
Second component call in the same request
worker INIT count for this loaded unit: 0
request ONCE count for this request: 1
component handler calls served by this worker copy: 2
Third component call through unit_call("COMPONENT:PROBE")
worker INIT count for this loaded unit: 0
request ONCE count for this request: 1
component handler calls served by this worker copy: 3