Also reset context as part of GpuStream/GpuCclHandle::release(), so that the post condition is the same as a moved-from instance.
Also reset context as part of GpuStream/GpuCclHandle::release(), so that the post condition is the same as a moved-from instance.

PiperOrigin-RevId: 392489165

tensorflow/runtime,tensorflow/runtime,tensorflow/runtime,tensorflow/runtime