"Something went wrong" when the room ID gets re-encoded by clients

### Steps to reproduce

1. In an unknown client, send a link to an Element Call which re-encodes `%3A` to `%253A`
2. Click that link
3. Get 'Something went wrong"

### Outcome

#### What did you expect?

A descriptive error message like "that room doesn't exist" or "that link is bad" rather than "it broke".

I explicitly do *not* expect that Element Call fix the URL for me. I'd rather go back to the original poster and tell them it's broken.

#### What happened instead?

"Something went wrong"

### Operating system

Windows 11 Pro

### Browser information

Chrome Version 143.0.7499.41

### URL for webapp

call.element.io

### Will you send logs?

Yes