Backfill data columns (#15580)

**What type of PR is this?**

Feature

**What does this PR do? Why is it needed?**

Adds data column support to backfill.

**Acknowledgements**

- [x] I have read
[CONTRIBUTING.md](https://github.com/prysmaticlabs/prysm/blob/develop/CONTRIBUTING.md).
- [x] I have included a uniquely named [changelog fragment
file](https://github.com/prysmaticlabs/prysm/blob/develop/CONTRIBUTING.md#maintaining-changelogmd).
- [x] I have added a description to this PR with sufficient context for
reviewers to understand this PR.

---------

Co-authored-by: Kasey <kasey@users.noreply.github.com>
Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: Preston Van Loon <preston@pvl.dev>

cmd/beacon-chain/sync/backfill/options.go

@@ -4,7 +4,6 @@ import (
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/node"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/sync/backfill"
 	"github.com/OffchainLabs/prysm/v7/cmd/beacon-chain/sync/backfill/flags"
-	"github.com/OffchainLabs/prysm/v7/consensus-types/primitives"
 	"github.com/urfave/cli/v2"
 )
 
@@ -17,11 +16,6 @@ func BeaconNodeOptions(c *cli.Context) ([]node.Option, error) {
 			backfill.WithWorkerCount(c.Int(flags.BackfillWorkerCount.Name)),
 			backfill.WithEnableBackfill(c.Bool(flags.EnableExperimentalBackfill.Name)),
 		}
-		// The zero value of this uint flag would be genesis, so we use IsSet to differentiate nil from zero case.
-		if c.IsSet(flags.BackfillOldestSlot.Name) {
-			uv := c.Uint64(flags.BackfillOldestSlot.Name)
-			bno = append(bno, backfill.WithMinimumSlot(primitives.Slot(uv)))
-		}
 		node.BackfillOpts = bno
 		return nil
 	}