[clang] [llvm] [mlir] [OpenMP][Mappers] Fix ref-count tracking for maps inserted by mappers. (PR #177059)

[Joseph Huber via cfe-commits]

jhuber6 wrote:

Is this still failing on the bots? Should be reverted if there isn't a fix coming.

https://github.com/llvm/llvm-project/pull/177059