New image viewer graphic glitches

[bastian2001]

While the single finger zoom range seems to be fixed now (which makes the image viewer a lot less fun 🫠), there are some new glitches I found when zooming.

Three things that I have noticed:

1. Single finger zoom now has a weird snapping point at one specific zoom level (and it doesn't have a uniform speed, even on the same image: sometimes, a whole screen movement is not enough for the full zoom range, and sometimes half a screen height is enough). https://www.youtube.com/shorts/rZaGdT4T710
2. Sometimes, when using two fingers before the zoom is back to its clamped value, the image shifts randomly to the side. I have not found when and how this happens. Just that it happens sometimes. https://www.youtube.com/shorts/rBDpB1PHofg
3. when two fingers are close together they are being counted as one, which moves the image rather than scaling it. In extreme scenarios this lets you close an image despite using the zoom gesture. https://www.youtube.com/shorts/f1cNMol9rLM

Let me know if you want them as 3 separate issues.