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## Summary Restore mouse-wheel scrolling for read-only preview widgets (PreviewAny plaintext and markdown modes), broken by the focus-gated wheel capture in #6597. ## Changes - **What**: Remove `disabled` attribute from read-only textareas (keep `readonly`) so they can receive focus and capture wheel events. Add `data-capture-wheel` and `tabindex` to WidgetMarkdown display div. - **Root cause**: `disabled` elements cannot receive focus in browsers. The focus-gated `wheelCapturedByFocusedElement()` from #6597 always evaluated to false for disabled textareas, forwarding all wheel events to the canvas. ## Review Focus - Verify that removing `disabled` while keeping `readonly` does not allow unintended editing - Confirm `tabindex="0"` on the markdown display div does not cause unexpected tab-order issues - Ensure trackpad panning over unfocused widgets (#6523) still works correctly Fixes COM-14812 ┆Issue is synchronized with this [Notion page](https://www.notion.so/PR-8863-fix-restore-mouse-wheel-scrolling-in-preview-as-text-outputs-3076d73d365081719bf5e453235bb2b5) by [Unito](https://www.unito.io)