[Rust] [Parquet] Unignore some roundtrip tests that are passing now #18343
Description
We had some roundtrip Parquet -> Arrow tests that were failing so we ignored them, but now there has been more work and they pass!
Reporter: Carol Nichols / @carols10cents
Assignee: Carol Nichols / @carols10cents
PRs and other links:
Note: This issue was originally created as ARROW-10413. Please see the migration documentation for further details.