Element asks for nonexistent password while password changing

### Steps to reproduce

1. Sign up with GitHub.
2. Go to settings -> account
3. Try to set a new password, you don't have a password
4. Element will prevent you from entering a empty password, even if you don't have one

### Outcome

#### What did you expect?
I was expecting it to say "oh, this user logged in with github, let them choose a password" and let me choose a password
#### What happened instead?
It asked for a nonexistent password

### Operating system

Fedora Workstation 40 (KDE Plasma)

### Browser information

Mozilla Firefox Snap for Ubuntu 129.0.2 (64-bit)

### URL for webapp

app.element.io

### Application version

Element version 1.11.76

### Homeserver

matrix.org

### Will you send logs?

No