Add shouldScroll predicate to AutoScroller (closes #2070)

[timagixe]

PR Description

Closes #2070.

Summary

• Adds AutoScroller.configure({shouldScroll}) to let consumers filter scrollable auto-scroll candidates.
• Keeps existing default auto-scroll behavior unchanged.
• Documents the new option with a scrollable sortable-item example.
• Adds a controlled Storybook example for scrollable sibling items.
• Adds unit and e2e coverage for predicate behavior and the AutoScroller scrolls sibling draggables #2070 sibling-scroll case.
• Adds a changeset for @dnd-kit/dom.

Verification

• run test
• run test:e2e
• run build

[changeset-bot]

🦋 Changeset detected

Latest commit: 9f9e8ad

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 10 packages

Name	Type
@dnd-kit/dom	Minor
@dnd-kit/react	Minor
@dnd-kit/solid	Minor
@dnd-kit/svelte	Minor
@dnd-kit/vue	Minor
@dnd-kit/abstract	Minor
@dnd-kit/collision	Minor
@dnd-kit/geometry	Minor
@dnd-kit/helpers	Minor
@dnd-kit/state	Minor

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commit: 9f9e8ad

[jindong-zhannng]

@timagixe looks good to me. @clauderic could you move it forward?