Ability to pass a custom function for computeScrollPosition

[preetmishra]

What problem is this solving

Due to the way our HTML layout is set up, the scrollbar appears on an element several levels deeper rather than on the window itself, breaking the intended functionality. The scroll position is never restored because of the incorrect values in the savedPosition property.

export const computeScrollPosition = (): _ScrollPositionNormalized => ({
  left: window.scrollX,
  top: window.scrollY,
})

Proposed solution

We’d like the option to pass a custom function that calculates the top value based on another element's scrollTop in the HTML. We're open to other workarounds and are happy to submit a PR with the proposed solution as well.

Describe alternatives you've considered

No response

[posva]

Closing in favor of #2403 which was in the board but not visible in issues

[preetmishra]

Thanks, @posva! Any general timeline about how much time it could take? Happy to submit a PR too!