Add fallback prop for rx.Image

[Alek99]

If a src that is given to rx.image is invalid allow a prop fallback to show. This prop can be an rx.component

[linear]

ENG-5000 Add fallback prop for rx.Image

[silambarasan-rd]

@Alek99 I would like to implement this feature. Please assign it to me.

[MuhammadNizamani]

@silambarasan-rd i think you just need to create a pull request for this issue and mention this issue number in your PR like following Closes #issueNumer

[vjabhi000985]

@Alek99 I would love to work on this issue and resolve the issues.

[ayu-sh63]

Hi @Alek99,
I'd love to work on this issue and help get it resolved. Would it be okay if I take this one? Looking forward to your response!