Expose the seed in the `load` function, as is the case in other environments.
Expose the seed in the `load` function, as is the case in other environments.

PiperOrigin-RevId: 274131099
Change-Id: I01a77ca55b877ed6fe76cbe6b4e61a4d1970e204

deepmind/bsuite,deepmind/bsuite