Migrate Row and Column implementations away from subtypes
#7371
| Job | Run time |
|---|---|
| 2m 26s | |
| 1m 39s | |
| 4m 35s | |
| 1m 54s | |
| 2m 2s | |
| 1m 33s | |
| 2m 34s | |
| 2m 57s | |
| 2m 11s | |
| 3m 9s | |
| 0s | |
| 25m 0s |