Scroll images in project issues separately from the remaining issue (#31683) (#31823)

Scroll images in project issues separately from the remaining issue (#31683) (#31823)

Backport #31683 by @SimonPistache

As discussed in #31667 & #26561, when a card on a Project contains
images, they can overflow the card on its containing column. This aims
to fix this issue via snapping scrollbars.

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Issue #31667 is open to discussion as there should be room for
improvement.

Co-authored-by: Simon Priet <105607989+SimonPistache@users.noreply.github.com>