## Proposed Changes
Fix the misplacement of the total block production time metric, which occurred during a previous refactor.
Total block production times are no longer skewed low (data from Holesky + blockdreamer):
```
# HELP beacon_block_production_seconds Full runtime of block production
# TYPE beacon_block_production_seconds histogram
beacon_block_production_seconds_bucket{le="0.005"} 0
beacon_block_production_seconds_bucket{le="0.01"} 0
beacon_block_production_seconds_bucket{le="0.025"} 0
beacon_block_production_seconds_bucket{le="0.05"} 0
beacon_block_production_seconds_bucket{le="0.1"} 0
beacon_block_production_seconds_bucket{le="0.25"} 0
beacon_block_production_seconds_bucket{le="0.5"} 37
beacon_block_production_seconds_bucket{le="1"} 65
beacon_block_production_seconds_bucket{le="2.5"} 66
beacon_block_production_seconds_bucket{le="5"} 66
beacon_block_production_seconds_bucket{le="10"} 66
beacon_block_production_seconds_bucket{le="+Inf"} 66
beacon_block_production_seconds_sum 34.225780452
beacon_block_production_seconds_count 66
```
## Additional Info
Cheers to @jimmygchen for helping spot this.
5cc0f1097b