RFR: 8340344: The first item in TreeView is not aligned in the beginning [v6]

[Andy Goryachev]

On Tue, 20 May 2025 15:53:53 GMT, Ziad El Midaoui <zelmidaoui at openjdk.org> wrote:

>> The issue occurred because items preceding an item with children (items with a disclosure node) had different widths, which led to misalignment. This can be fixed by requesting a cell relayout whenever the disclosure node's width changes.
>
> Ziad El Midaoui has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Avoid re-layout items twice after disclosure node width value updated

Marked as reviewed by angorya (Reviewer).

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PR Review: https://git.openjdk.org/jfx/pull/1715#pullrequestreview-2855372143