Regression: FixedSlizeList data type parsing fails on 57.1.0

[alamb]

Describe the bug

• part of Release arrow-rs / parquet Minor version 57.1.0 (November 2025) #8464

Arrow 57.0.0 can parse DataTypes like FixedSizeList(4, Int64)

However, the arrow 57.1.0 pre-release can not.

To Reproduce
See tests in the DataFusion upgrade

• Update to arrow, parquet to 57.1.0 datafusion#18820

It then fails like this

1. query failed: DataFusion error: Execution error: Unsupported type 'FixedSizeList(4, Int64)'. Must be a supported arrow type name such as 'Int32' or 'Timestamp(ns)'. Error Expected 'x', got ','

Expected behavior
Type parsing should pass

Additional context

[alamb]

Perhaps related to this change

• feat: parse DataType List, ListView, LargeList, LargeListView, FixedSizeList #8649
• feat: parse DataType::Union, DataType::Map, DataType::RunEndEncoded #8765

[alamb]

There are also similar problems with List, and LargreList, etc

[alamb]

It was introduced in this PR:

• feat: parse DataType List, ListView, LargeList, LargeListView, FixedSizeList #8649

Fix is here:

• Support parsing for old style FixedSizeList #8882