image-treatment: right-click actions on image are being suppressed about skin

[agniputran]

will-change: opacity is known to have performance issues.
https://developer.mozilla.org/en-US/docs/Web/CSS/will-change

Hence shouldn't be added to too many DOM element, if you can add a note on the skin docs, that'd be great. Basically a word of caution kind of thing

[agniputran]

In viewitem, we found users complaining about mix-blend-mode not working well in dark mode. so i feel like you can simply add the pointer-events: none to the ::after pseudo for image-treatment instead of switching to mix-blend-mode. Anyways you would have run into performance issues with over-using will-change: opacity

[ArtBlue]

@ianmcburnie , @agniputran , is mix-blend-mode referring to this:

&::after { 
    background: rgba(0, 0, 0, 0.05);
}

So, we're getting rid of this in lieu of pointer-events: none; ? These are not related so I'm trying to figure out why they are mentioned in relation to each other.