Array callbacks have no effect when called during iocInit

[ericonr]

Hi!

I have an IOC with array records that are written to hardware, and read back, using asyn. The setpoints are in autosave and have PINI=YES. Their values are written to hardware correctly right after iocInit (I added a debug print right after the write, in writeInt32Array/writeFloat64Array, to be sure), but the readback PVs, which are updated via doCallbacksInt32Array/doCallbacksFloat64Array, aren't updated with the value from the setpoint (and in fact are UDF/INVALID).

The readback records use SCAN=I/O Intr, and they are updated when the setpoint PV is written to during operation, or when I write 1 into setpoint.PROC. The issue seems to be exclusively with the processing during IOC initialization.

I might have observed a similar issue with asynOctet as well, but I haven't prepared a reproducer for it yet, so I don't think it's relevant here.