fix(abstract): preserve initial dragstart target (closes #2054)

[timagixe]

Summary

Closes #2054.

Fixes a regression in @dnd-kit/abstract where event.operation.target was null in onDragStart.

The fix keeps dragstart before dragover, restores the initial droppable target on the dragstart event, and preserves queued setDropTarget() promise behavior.

Changes

• Restore operation.target on dragstart.
• Defer initial dragover until after dragstart.
• Keep queued setDropTarget() pending until deferred dragover finishes.
• Add regression tests.

Testing

• bun run build
• bun test packages/abstract/tests/drag-event-order.test.ts
• bun test packages/abstract/tests
• bun run test

[changeset-bot]

🦋 Changeset detected

Latest commit: e90b297

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/abstract	Patch
@dnd-kit/collision	Patch
@dnd-kit/dom	Patch
@dnd-kit/geometry	Patch
@dnd-kit/helpers	Patch
@dnd-kit/react	Patch
@dnd-kit/state	Patch
@dnd-kit/vue	Patch
@dnd-kit/solid	Patch
@dnd-kit/svelte	Patch

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commit: e90b297