[bug] Cannot perform table scan on V1 table

[kevinjqliu]

Apache Iceberg version

main (development)

Please describe the bug 🐞

While working with a V1 table, I noticed a few bugs which prevent table scan on V1 table.

1. Reading the manifest list defaults to V2
   

   iceberg-python/pyiceberg/manifest.py

   Line 635 in 620ad9f

   MANIFEST_LIST_FILE_SCHEMAS[DEFAULT_READ_VERSION],

2. Accessing fields not available in V1.
   

   iceberg-python/pyiceberg/table/__init__.py

   Line 1311 in 620ad9f

   if manifest.content == ManifestContent.DATA

   
   The content field is not available in V1, according to the spec.
   There are multiple places where something like this occurs.

Add a test to verify table scan on a V1 table