Inconsistent results with non-existent doc_id #591

TinyDB version: 4.8.2
Python version: 3.13.3

There is a difference in behavior when a non-existent doc_id is passed:

• table.get(doc_id=N) returns None
• table.update(doc_ids=[N]) raises KeyError exception
• table.remove(doc_ids=[N]) raises KeyError exception

All method should have consistent results, i.e., either all raising an exception, or all returning a value (None or an empty list).

Also, the KeyError is generally not mentioned in the documentation for these operations.