Describe the bug
If the replay height is larger than 5000 blocks, the replay period is very long (maybe several minutes), we should give a appropriate prompt to user, not just suspend the program for several minutes.
To Reproduce
- Suppose current height is 20000
- iris reset --height=10000 --home=***
- iris start --home=****
.... ....
The user has to wait a very long time without any prompt.
.... ....