Zoom factor is lost on restarts

[Arthur]

🔍 Is there already an issue for your problem?

• I have checked older issues, open and closed

📝 Description

I'm heavily relying on the ability to zoom/unzoom the application window because it's way too big for me by default, but whenever I restart the app, the previous zoom level is lost

(I'll open a PR to address this in a few seconds)

🪜 Steps To Reproduce

1. Open Gitify
2. Hit Cmd - a few times to unzoom
3. Close and restart Gitify -> window zoom is lost

Gitify Version

5.3.0 (but I already had this issue pre v5.x)

Operating System

macOS

GitHub Account

GitHub.com

📸 Screenshots

In the following video I start with an unzoomed window, and after closing / reopening the app it comes back with a zoomFactor of 1
https://github.com/gitify-app/gitify/assets/26418696/261d2df7-79a5-404c-ba47-25ecb133a230