Refactor LC Classification Step: Use oid to group objects

[dirodriguezm]

Summary of the changes

• Uses oid instead of aid to group objects
• Update the elasticc models as well
• Refactor logging logic so that it only runs on errors

If the change is BREAKING, please give more details about the breaking changes

• The grouping is now oid and not aid

Components that need updates and steps to follow

The alerce classifiers repo should be updated by merging this PR, but after merging this one first.

About this PR:

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