Crash when entering non ascii characters in account creation

[ouchadam]

Steps to reproduce

1. In the account creation screen
2. Type non ascii characters into the username field (eg emojis or script language characters)
3. Notice the app crashes

Outcome

What did you expect?

No crash

What happened instead?

The app crashes

Your phone model

No response

Operating system version

No response

Application version and app store

No response

Homeserver

No response

Will you send logs?

No

Are you willing to provide a PR?

Yes