[llvm] test/MSan: change target trilpe to 32-bit arch in respective tests (PR #115018)

[Vitaly Buka via llvm-commits]

vitalybuka wrote:

Let's abandon this one, as it's remove some CHECKs which will be restored by https://github.com/llvm/llvm-project/pull/109284

https://github.com/llvm/llvm-project/pull/115018