Bug 513147

Submitting a bug as directed by @redstrate:pyra.sh on Matrix

SUMMARY
Unable to connect to a [snac2](https://codeberg.org/grunfink/snac2) server

STEPS TO REPRODUCE
1. Open Tokodon with a clean config (in my case: `rm -rf ~.var/app/org.kde.tokodon/`, then launch Tokodon)
2. Click on "Login" on the main screen
3. Enter the server/instance URL (in my case: `https://snac.bsd.cafe/`)
4. Click on the server name that pops up below with the text "Custom Server"

OBSERVED RESULT
Nothing happens on that screen, but if you go back, click on "Settings", then "Error Log," you will see two entries:
```
https://snac.bsd.cafe/api/v1/apps: Error transferring https://snac.bsd.cafe/api/v1/apps - server replied: 
https://snac.bsd.cafe/api/v2/instance: Error transferring https://snac.bsd.cafe/api/v2/instance - server replied: 
```


EXPECTED RESULT
Tokodon talks to the server and sets up your account

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Debian GNU/Linux 13 (trixie)

Details from System Settings — "About This System":
Operating System: Debian GNU/Linux 13
KDE Plasma Version: 6.3.6
KDE Frameworks Version: 6.13.0
Qt Version: 6.8.2
Kernel Version: 6.12.57+deb13-amd64 (64-bit)
Graphics Platform: Wayland
Processors: 4 × Unknown Type, 12 × 12th Gen Intel® Core™ i7-1260P
Memory: 32 GiB of RAM (31.1 GiB usable)
Graphics Processor: Intel® Iris® Xe Graphics
Manufacturer: LG Electronics
Product Name: 17Z90Q-K.ADC9U1
System Version: 0.1