[MILR][NVVM] Fix missing semicolon in nvvm.barrier.arrive Op (#92769)

This commit fixes the missing semicolon in the PTX codegen path where
barrier id is provided for the NVVM BarrierArriveOp. Also, updated
nvvm-to-llvm.mlir lit test to reflect the same

Co-authored-by: pradeepku <pradeepku@nvidia.com>