core-dialog: Prevent background scrolling when open option

[eirikbacker]

As a user I want, html/body scrolling to stop when dialog is open - can this be an option core-dialog fixes for me?

[eirikbacker]

Wait a minute - maybe this is the solution:
https://ishadeed.com/article/prevent-scroll-chaining-overscroll-behavior/

[skjalgepalg]

Overscroll-behavior sounds like it should solve this for most cases.

https://caniuse.com/?search=overscroll-behavior

• Mind that it's only available as opt-in under experimental features in safari and safari on iOS with no apparent polyfill or workaround short of temporarily modding body styles.

[eirikbacker]

@skjalgepalg jupp :) maybe mention it in the docs as this is quite a new feature and our users might not be aware of it? as overscroll-behavior is nice to have and not a must, I do not see safari not supporting it (yet) as a blocker :)