[Placeholder] Visible in Safari Reader Mode

[Dangoo]

Describe the bug
The blurred placeholder is visible in Safari Reader mode besides the desired full image.

To Reproduce
Steps to reproduce the behavior:

1. Place image on a page with enough text to enable Safari Reader mode
2. Open Reader Mode
3. See blurred preview as well as actual image

Expected behavior
Only the actual image from Picture should be shown

Screenshots

Desktop (please complete the following information):

• OS: Mac OS
• Browser: Safari
• Version: 14.1.1

[BJvdA]

Thanks for the bug report, I think I've fixed it (strange that Safari ignores that the placeholder image has aria-hidden 🙈)