Default backup password can be less than len(6)

[trysten]

General information

• App version: 0.9.0.1-play
• Android Version: 9

Expected result

What is expected? password length requirement is enforced everywhere

What does happen instead? minimum length is not enforced in Settings -> Backup Password

Steps to reproduce

• Go to settings -> Backup Password and set a short password (len<6)

This is the continuation of my comment on #168. I assume this is how I got myself into that situation. I'm still thinking that the cheap hack of removing the length limit on the decryption secret entry is a good way to prevent more user frustration. We don't know how many backups with short secrets are out there.

[o-alquimista]

I wanna try to fix this. @flocke, is it ok to disable the length validation when attempting to restore an encrypted backup? Then we also enable the missing length validation in Settings -> Backup password.

UPDATE: I'm halfway through. Already disabled the length validation when in ENTER mode, but not when in UPDATE mode. Now I just gotta add the missing validation.