[BUG] `TransformedEnv` does not copy env properties about rl HOT 2 CLOSED

Is this a generic bug or just specific to _allow_done_after_reset?

Not sure it's really a bug in general, there are instances where one would like to have different attributes in the transformed env and in the env.
For some (eg _allow_done_after_reset?) we can have fallbacks if we're confident that there is no reason for TransformedEnv to have a different behaviour. It's already the case for batch_size, device, run_type_checks and others.

For instance, I can imagine that if one is using the no-op transform she expects the behaviour of _allow_done_after_reset to change.

from rl.

We can default to the attribute value in the original env and the specific transforms can change it.

I think it is counterintuitive that, if the transform does not need to change the property, the wrapper changes it.

Not sure if it is just specific to this

from rl.