ARROW-10262: [C++] Fix TypeClass for BinaryScalar and LargeBinaryScalar
ARROW-10262: [C++] Fix TypeClass for BinaryScalar and LargeBinaryScalar

Alias `TypeClass` in `BinaryScalar` and `LargeBinaryScalar` are seemingly typo-ed to be `BinaryScalar` and `LargeBinaryScalar`. This causes issues when using `ScalarType::TypeClass`, esp. with `TypeTrait` - i.e., compiler complains that there are no whatever members in specialized `TypeTrait<BinaryScalar>` and `TypeTrait<LargeBinaryScalar>`.

Fixing them to `BinaryType` and `LargeBinaryType`.

Closes #8423 from zanmato1984/arrow-10262

Authored-by: zanmato1984 <c5748dd9dc588f663b36ded7d9031cd5341cbbfd@gmail.com>
Signed-off-by: Antoine Pitrou <9359a4d812173b65a3a0094cd86363e79731a3c2@python.org>

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