Backgrounds panel issues

[Oleg Isonen]

• jump when switching between image and gradient https://share.descript.com/view/gRPo8AORr7N
• when choosing an image after having a url, url is normally being reset, so you don't have both, now I managed to have both
  
• shouldn't all properties land in the Code area? not just the url()?
• Code area label should be Code

[johnsicili]

Another thing

• Gap is missing between the image and field on a smaller screen (height). Bogdan says because flex-shrink: 0 is missing

[Jaya Krishna Namburu]

Hey @johnsicili this is fixed in #3512 yet to reach release 👍