We carried over all unsupported: marks from task_priority test which seems to have had just racy behavior for ages. This test should be fine on arm64e, and especially, we must run it to verify the pointer auth of these APIs.
This allowed a pointer auth issue to slip through, so let's remedy this by actually running the test on those platforms.
* [Concurrency] Adjust task escalation APIs to SE accepted shapes
* adjust test a little bit
* Fix closure lifetime in withTaskPriorityEscalationHandler
* avoid bringing workaround func into abi by marking AEIC
Previously these records were not used at all, so changing this has no
impact on existing runtimes. Note that we changedd the FunctionType
because the previous one was slightly incorrect -- the context comes
LAST in the type, not first.
