Decimal Statistics emitted by parquet-cpp are broken

PARQUET-1655 min/max statistics for Decimal logical types that are encoded as byte arrays or fixed length byte arrays are potentially broken.  All reader implementations should ignore/clear them for parquet for files written with a version included "parquet-cpp"

This serves as a parent tracking issue. To fix various readers.

**Reporter**: [Micah Kornfield](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=emkornfield) / @emkornfield

_{**Note**: *This issue was originally created as [PARQUET-2003](https://issues.apache.org/jira/browse/PARQUET-2003). Please see the [migration documentation](https://issues.apache.org/jira/browse/PARQUET-2502) for further details.*}

No files, tests, or entry points are named. Start by locating the reader implementations handling Decimal logical types and review PARQUET-1655; done means all affected readers ignore or clear min/max statistics for files written with parquet-cpp.

Written by the indexing model from the issue text.