[PJRT] Change return type of PjrtDevice::id() to PjRtGlobalDeviceId.
[PJRT] Change return type of PjrtDevice::id() to PjRtGlobalDeviceId.

Remove PjrtDevice::global_device_id() overload.

Reverts changelist 443785169

FUTURE_COPYBARA_INTEGRATE_REVIEW=https://github.com/tensorflow/tensorflow/pull/61632 from buptzyb:multistream-streammerge 5aabb58431e56868c1f462ec3851785132d4cd47
