Try to make dataset objects totally unhashable

[uranusjr]

Using the hash property on Dataset (and DatasetAlias) is problematic since subclassing is a possibility, and user code may not correctly implement hashing for Airflow’s purposes.

[Lee-W]

I'm good with this change, but not sure whether it should be categorized as a breaking change

[uranusjr]

This should generally not affect too many usages, but there’s no harm adding a note I guess. We can’t tell how those are used…

[potiuk]

cc: @uranusjr @Lee-W -> we revert it for now as it causes some tests involving open-lineage (in amazon and common.io providers) to fail - see #42059 discussion. Apparently there is an implicit dependency betweeen datasets implementation and amazon/common.io tests

Please re-do it and add "full tests needed" label for this change to make sure all the tests are passing.

[kacpermuda]

I think the OpenLineage is not involved here, but the hook level lineage collection is causing different providers to create datasets, so there is a dependency there.