Why would you, is perhaps the more pertinent question. A column with AUTOINCREMENT will be an alias of the rowid column which is used to uniquely identify a row. It isn't the best practice to rely upon this value other than for identifying a row.
Using AUTOINCREMENT (autogenerate = true) results in an internal table sqlite_sequence being created, a row in that table holds the value of the highest ever used rowid The next rowid will be that values + 1. Hence your issue.
As such to restart from 1 you would have to either update the respective row in the sqlite_sequence table to 0 or delete the respective row in the sqlite_sequence table.
You may wish to have a look at Android Room - reset auto generated key on each app run. Noting that this could be the basis for resetting the sequence value, but that it will always resets the sequence value.
