fix crashing when parsing column names including _a, _b

[vvkh]

Fix exceptions when using --json for datasets including columns with _a or _b in the name

traceback

         ERROR    Field dataset1 requires a value                                                                                                         __main__.py:326
Traceback (most recent call last):
  File "/Users/dan/repos/demo/env/bin/data-diff", line 8, in <module>
    sys.exit(main())
             ^^^^^^
  File "/Users/dan/repos/demo/env/lib/python3.11/site-packages/click/core.py", line 1130, in __call__
    return self.main(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/dan/repos/demo/env/lib/python3.11/site-packages/click/core.py", line 1055, in main
    rv = self.invoke(ctx)
         ^^^^^^^^^^^^^^^^
  File "/Users/dan/repos/demo/env/lib/python3.11/site-packages/click/core.py", line 1404, in invoke
    return ctx.invoke(self.callback, **ctx.params)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/dan/repos/demo/env/lib/python3.11/site-packages/click/core.py", line 760, in invoke
    return __callback(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/dan/repos/demo/env/lib/python3.11/site-packages/data_diff/__main__.py", line 311, in main
    dbt_diff(
  File "/Users/dan/repos/demo/env/lib/python3.11/site-packages/data_diff/dbt.py", line 132, in dbt_diff
    _local_diff(diff_vars, json_output)
  File "/Users/dan/repos/demo/env/lib/python3.11/site-packages/data_diff/dbt.py", line 313, in _local_diff
    jsonify(
  File "/Users/dan/repos/demo/env/lib/python3.11/site-packages/data_diff/format.py", line 42, in jsonify
    diff_rows_jsonified.append(_jsonify_diff(row, key_columns))
                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/dan/repos/demo/env/lib/python3.11/site-packages/data_diff/format.py", line 229, in _jsonify_diff
    return {column: JsonDiffRowValue(**data) for column, data in columns.items()}
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/dan/repos/demo/env/lib/python3.11/site-packages/data_diff/format.py", line 229, in <dictcomp>
    return {column: JsonDiffRowValue(**data) for column, data in columns.items()}
                    ^^^^^^^^^^^^^^^^^^^^^^^^
  File "<string>", line 7, in __init__
  File "/Users/dan/repos/demo/env/lib/python3.11/site-packages/runtype/dataclass.py", line 227, in __post_init__
    _post_init(self, config=config, should_cast=check_types == 'cast', sampler=sampler)
  File "/Users/dan/repos/demo/env/lib/python3.11/site-packages/runtype/dataclass.py", line 104, in _post_init
    raise TypeError(f"Field {name} requires a value")
TypeError: Field dataset1 requires a value

Note: currently there are handy removesuffix and removeprefix methods, but they were added in Python 3.9, so we can't use them.

[dlawin]

Tested and it resolved the issue