Why does copying an image from Chrome and pasting it into MS Paint reduce its quality, and how can I prevent this?

When I copy an image in Chrome:

enter image description here

and paste it into MS Paint, the quality is reduced:

enter image description here

Why, and how can I prevent that?

I use Windows 11 24H2 Pro, Paint 11.2412.311.0 and a MSI GS76 Stealth 11UH laptop.