`Censored.from_dict` doesn't work with TensorVariable array

[williambdean]

The round trip doesn't work when either lower or upper are TensorVariable arrays. They are translated to lists which are not handled at init

https://github.com/pymc-labs/pymc-marketing/blob/441aa8093c63e558ac5bd40eba178c92a6c71061/pymc_marketing/prior.py?plain=1#L1223-L1231

We should either handle at initialization or in the from_dict method directly

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This issue was transferred from pymc-labs/pymc-marketing#1646