Image Block - overlay does not match border radius

[malalacharm]

Describe the bug
When adding overlay to an image with a border-radius, it remains rectangular and does not follow the border-radius applied.

To Reproduce
Steps to reproduce the behavior:

1. Add a page
2. Add an image
3. Se the image border radius to 100
4. Add overlay color
5. See error on editor (overlay is still rectangular)
6. See error on frontend

Expected behavior
The overlay should follow the same border-radius as the image

Screenshots