RL Tutorials failing against RC 2.8

It looks like some tutorials (RL) are failing against the RC 2.8 test with the error:
```
ModuleNotFoundError: No module named 'tensordict'
```
Possibly need an update to [tensordict in the requirements.txt](https://github.com/pytorch/tutorials/blob/main/.ci/docker/requirements.txt#L33)

You can find the RC branch test here: https://github.com/pytorch/tutorials/pull/3416

cc: @vmoens 