implement missing arrow and data contracts tests

[rudolfix]

Tasks

• - test basic pyarrow lib
• - test pyarrow normalize
• - define columns and then load arrow table with incorrect order
• - fix _dlt_load_id added only if needed
• - test discard value and discard row in nested json: discard row in child table that has another child table should discard data from descendants
• - test removal of x-normalizer tags (also when {})
• - pydantic nested model test
• - allow Annotated when synthesizing models
• - test freeze exception with Pydantic

[sh-rp]

Questions:

• What should we test with nested models on pydantic? Right now it is not implemented, so maybe this is the task?