[CHIA-1562] move signature validation into run_block_generator()
#23274
| Job | Run time |
|---|---|
| 1s | |
| 12m 44s | |
| 12m 45s |
run_block_generator()
#23274
| Job | Run time |
|---|---|
| 1s | |
| 12m 44s | |
| 12m 45s |