Add link to bluesky issue that we could use to simplify

src/mx_bluesky/hyperion/experiment_plans/robot_load_then_centre_plan.py

@@ -123,6 +123,7 @@ def take_robot_snapshots(oav: OAV, webcam: Webcam, directory: Path):
  device.filename, snapshot_format.format(device=device.name)
  )
  yield from bps.abs_set(device.directory, str(directory))
+ # Note: should be able to use `wait=True` after https://github.com/bluesky/bluesky/issues/1795
  yield from bps.trigger(device, group="snapshots")
  yield from bps.wait("snapshots")