This patch moves the definitions of memory effects for the data
entry/exit operations into C++ code. The main reason for this
is to modify the effects of [first]private and reduction
operations: they should not access `CurrentDeviceIdResource`
when they are located inside a compute construct.
The ODS to C++ migration was done with AI assistance. I reviewed
these changes and made sure it was an NFC change. After that
I modified [first]private and reduction implementations.
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