Tests were switched from put_kzg_verified_custody_data_columns (no
filtering) to put_rpc_custody_columns (filters to sampling columns) but
assertions still assumed all provided columns would be stored. Account
for the sampling filter in each test's setup and assertions.
The tests previously wrapped raw columns with `KzgVerifiedDataColumn::__new_for_testing`
and `KzgVerifiedCustodyDataColumn::from_asserted_custody`, then called the internal
`put_kzg_verified_custody_data_columns`. That bypassed KZG verification entirely and
hid the fact that Gloas data column verification is not yet wired up
(`verify_kzg_for_data_column` short-circuits because Gloas column sidecars don't
carry kzg_commitments — they live in the bid).
Drive `put_rpc_custody_columns` directly so the tests exercise real KZG
verification. 9 of 12 tests now fail with `InconsistentArrayLength("Gloas data
columns require commitments from block")`, which is the actual current state and
should be fixed alongside the verifier work.
