[Bug]: Proxy-settings do not work at launch of FreeTube

### Guidelines

- [X] I have encountered this bug in the [latest release of FreeTube](https://github.com/FreeTubeApp/FreeTube/releases).
- [X] I have encountered this bug in the [official downloads of FreeTube](https://github.com/FreeTubeApp/FreeTube#official-downloads).
- [X] I have searched the issue tracker for [open](https://github.com/FreeTubeApp/FreeTube/issues?q=is%3Aopen+is%3Aissue) and [closed](https://github.com/FreeTubeApp/FreeTube/issues?q=is%3Aissue+is%3Aclosed) issues that are similar to the bug report I want to file, without success.
- [X] I have searched the [documentation](https://docs.freetubeapp.io/) for information that matches the description of the bug I want to file, without success.
- [X] This issue contains only one bug.

### Describe the bug

I need a proxy to get access to YouTube. It's working as long as I'm in the session - close FreeTube and launch it again, the settings are ignored even though they are still set.

1. Click on settings
2. Select proxy settings ➡️ HTTPS ➡️ 192.168.178.55, Port 80 ➡️ click to check proxy ➡️ see that everythings fine and you'll see the IP you'll get via proxy.
3. Close FreeTube and launch it again
4. Click on settings ➡️ proxy settings ➡️ check proxy again ➡️ see the error message of misconfiguration
5. Workaround: Switch from HTTPS to HTTP and back again ➡️ everything is fine again.

### Expected Behavior

Usage of the proxy at launch

### Issue Labels

content not loading, feature stopped working, inconsistent behavior

### FreeTube Version

v0.21.3 Beta

### Operating System Version

Windows 11 Pro 23H2

### Installation Method

Chocolatey (Unofficial)

### Primary API used

Local API

### Last Known Working FreeTube Version (If Any)

_No response_

### Additional Information

_No response_

### Nightly Build

- [ ] I have encountered this bug in the latest [nightly build](https://docs.freetubeapp.io/development/nightly-builds).