Fix sticky header scroll offset (#45377)

Closes #43319

Release Notes:

- Sticky headers no longer obscure the cursor when it moves.

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Co-authored-by: HactarCE <6060305+HactarCE@users.noreply.github.com>
361b8e0ba9Julia Ryan committed on 12/19/2025, 5:04:15 PM· committed by GitHubparentd7e41f7
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