[flang] [llvm] [Flang][OpenMP] Appropriately emit present/load/store in all cases in MapInfoFinalization (PR #150311)

[via llvm-commits]

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+! OpenMP offloading test that checks we do not cause a segfault when mapping
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agozillon wrote:

It's a really unusual case I think and perhaps an unfortunate one as I think a few of the wider range of OpenMP/offload tests have a tendency to hang (depending on device/environment/feeling of the GPU/CPU on that particular day) makes it hard to get the tests ran in the buildbots that ping people as they need to consistently be green enough  :-)

https://github.com/llvm/llvm-project/pull/150311