Right now, we use `GetXlaPjrtCpuClient` which in turn calls `GetPjRtCpuClient`, but we will later update `GetXlaPjrtCpuClient` to use the C sandwich, in which case we must call `GetPjRtCpuClient` here in `PJRT_Client_Create`.
This change is a no-op.
PiperOrigin-RevId: 821732030